Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Machine Learning Scientist II, Search Marketing Bidding Introduction to team: The Search Product & Optimization team at Expedia Group sits within the Marketing division and is responsible for the algorithmic intelligence behind our global marketing investments. We operate in a fast-paced and dynamic environment, participating in millions of auctions daily across Search, Metasearch and Social platforms. Our mission is to build scalable, data-driven systems that optimize how we acquire traffic. We are moving beyond traditional analytics to develop automated decisioning systems that dynamically allocate investment to maximize business value. We operate under a build & scale philosophy, creating solutions that adapt to a rapidly evolving search marketing landscape. As a Machine Learning Scientist II, you will sit at the intersection of Data Science, Engineering and Marketing Management. You will work within a cross-functional squad to design, build and deploy machine learning models that solve complex investment allocation problems. You will focus on understanding the relationship between marketing cost and incremental financial returns, building algorithms that help us bid efficiently and effectively in competitive marketplaces. You will move beyond offline analysis to build production-grade models that drive real-world actions. In this role, you will: Design and implement machine learning models to optimize bidding strategies (e.g., Cost-Per-Click, Target ROAS, Target CPA) and investment allocation across diverse marketing channels. Develop methodologies to measure elasticity (how performance changes as spend scales) to help us answer granular capital allocation questions. Write clean, efficient and reproducible Python code. You will partner with Machine Learning Engineers to deploy your models into production environments, ensuring they are robust and scalable. Contribute to the development of feedback loops and control mechanisms that allow our bidding systems to self-correct and adapt to market volatility or competitor changes. Design and analyze A/B experiments to validate model performance and inform strategic decisions. Translate mathematical concepts into clear insights for business partners. You will help frame vague business problems into concrete analytical tasks and define the objective functions that our models solve for. Experience & Qualifications: Bachelor or Master's degree in a quantitative field (Computer Science, Statistics, Mathematics, etc.) or equivalent practical experience. 2+ years of professional experience applying Machine Learning to real-world business problems. Strong Python proficiency in writing production-quality code and using libraries like pandas, scikit-learn, numpy. Advanced SQL ability to write complex queries to handle large-scale datasets. Solid understanding of regression (GLMs), optimization techniques, time-series forecasting and probability theory. A strong interest in AdTech, Bidding Markets, Game Theory, or Control Systems. You are curious about how auctions work and how to optimize within them. Comfortable working with ambiguity. You can take a high-level goal and break it down into a solvable mathematical problem. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
03/02/2026
Full time
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Machine Learning Scientist II, Search Marketing Bidding Introduction to team: The Search Product & Optimization team at Expedia Group sits within the Marketing division and is responsible for the algorithmic intelligence behind our global marketing investments. We operate in a fast-paced and dynamic environment, participating in millions of auctions daily across Search, Metasearch and Social platforms. Our mission is to build scalable, data-driven systems that optimize how we acquire traffic. We are moving beyond traditional analytics to develop automated decisioning systems that dynamically allocate investment to maximize business value. We operate under a build & scale philosophy, creating solutions that adapt to a rapidly evolving search marketing landscape. As a Machine Learning Scientist II, you will sit at the intersection of Data Science, Engineering and Marketing Management. You will work within a cross-functional squad to design, build and deploy machine learning models that solve complex investment allocation problems. You will focus on understanding the relationship between marketing cost and incremental financial returns, building algorithms that help us bid efficiently and effectively in competitive marketplaces. You will move beyond offline analysis to build production-grade models that drive real-world actions. In this role, you will: Design and implement machine learning models to optimize bidding strategies (e.g., Cost-Per-Click, Target ROAS, Target CPA) and investment allocation across diverse marketing channels. Develop methodologies to measure elasticity (how performance changes as spend scales) to help us answer granular capital allocation questions. Write clean, efficient and reproducible Python code. You will partner with Machine Learning Engineers to deploy your models into production environments, ensuring they are robust and scalable. Contribute to the development of feedback loops and control mechanisms that allow our bidding systems to self-correct and adapt to market volatility or competitor changes. Design and analyze A/B experiments to validate model performance and inform strategic decisions. Translate mathematical concepts into clear insights for business partners. You will help frame vague business problems into concrete analytical tasks and define the objective functions that our models solve for. Experience & Qualifications: Bachelor or Master's degree in a quantitative field (Computer Science, Statistics, Mathematics, etc.) or equivalent practical experience. 2+ years of professional experience applying Machine Learning to real-world business problems. Strong Python proficiency in writing production-quality code and using libraries like pandas, scikit-learn, numpy. Advanced SQL ability to write complex queries to handle large-scale datasets. Solid understanding of regression (GLMs), optimization techniques, time-series forecasting and probability theory. A strong interest in AdTech, Bidding Markets, Game Theory, or Control Systems. You are curious about how auctions work and how to optimize within them. Comfortable working with ambiguity. You can take a high-level goal and break it down into a solvable mathematical problem. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Are you looking to launch your career in travel tech? Join our global team at Expedia Group, where we build scalable, high-impact solutions that help millions of travelers find the best flights and hotel deals worldwide. As aSoftware Development Engineer I, you'll contribute to Expedia'sSupply & Marketplace Pricing services teams-systems that power transparent, localized, and optimized pricing across brands like Expedia, Orbitz, and Travelocity. You'll work on high-traffic, distributed systems that handle millions of queries a day, with a strong focus on clean code, system integration, and user impact. What You'll Do Write, test, and maintain high-quality, modular, and maintainable code Debug issues, contribute to system design, and ensure seamless integration across services Collaborate with team members in problem-solving, code reviews, and technical discussions Apply core computer science concepts like data structures, OOP, and algorithms Learn from experienced engineers and seek opportunities to expand your technical skills Report on progress clearly and take ownership of assigned tasks Participate in Agile practices and contribute to a fast-paced, team-oriented development environment Note: this position is to join a back-end team Who You Are 0-2 years of experience in software development or related internships/projects. Bachelor's or Master's degree inComputer Science, Engineering, or a related technical field (or equivalent practical experience). Proficient in at least one programming language, such as Python, Java, Kotlin, or Scala Familiar withversion control systems(e.g., Git) and development tools (e.g., IntelliJ, Eclipse). Strong analytical and debugging skills, with a basic understanding oftesting, monitoring, and software quality principles. A collaborative team player who thrives in alearning environmentand embraces constructive feedback. Curious, self-motivated, and eager tolearn new technologies and frameworks. Why Expedia Group? At Expedia Group, we believe in empowering engineers to learn, grow, and innovate. You'll join a supportive team where your ideas are valued, your contributions have real impact, and your career can evolve quickly. If you're excited about building high-performance software that touches millions of lives and want to grow in a global, fast-paced tech environment, this role is for you! Work on meaningful problems that shape how the world travels. At Expedia Group, you'll build tech that connects people, powers brands, and makes travel more accessible-on a truly global scale. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, orientation, national origin, disability or age.
03/02/2026
Full time
Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Are you looking to launch your career in travel tech? Join our global team at Expedia Group, where we build scalable, high-impact solutions that help millions of travelers find the best flights and hotel deals worldwide. As aSoftware Development Engineer I, you'll contribute to Expedia'sSupply & Marketplace Pricing services teams-systems that power transparent, localized, and optimized pricing across brands like Expedia, Orbitz, and Travelocity. You'll work on high-traffic, distributed systems that handle millions of queries a day, with a strong focus on clean code, system integration, and user impact. What You'll Do Write, test, and maintain high-quality, modular, and maintainable code Debug issues, contribute to system design, and ensure seamless integration across services Collaborate with team members in problem-solving, code reviews, and technical discussions Apply core computer science concepts like data structures, OOP, and algorithms Learn from experienced engineers and seek opportunities to expand your technical skills Report on progress clearly and take ownership of assigned tasks Participate in Agile practices and contribute to a fast-paced, team-oriented development environment Note: this position is to join a back-end team Who You Are 0-2 years of experience in software development or related internships/projects. Bachelor's or Master's degree inComputer Science, Engineering, or a related technical field (or equivalent practical experience). Proficient in at least one programming language, such as Python, Java, Kotlin, or Scala Familiar withversion control systems(e.g., Git) and development tools (e.g., IntelliJ, Eclipse). Strong analytical and debugging skills, with a basic understanding oftesting, monitoring, and software quality principles. A collaborative team player who thrives in alearning environmentand embraces constructive feedback. Curious, self-motivated, and eager tolearn new technologies and frameworks. Why Expedia Group? At Expedia Group, we believe in empowering engineers to learn, grow, and innovate. You'll join a supportive team where your ideas are valued, your contributions have real impact, and your career can evolve quickly. If you're excited about building high-performance software that touches millions of lives and want to grow in a global, fast-paced tech environment, this role is for you! Work on meaningful problems that shape how the world travels. At Expedia Group, you'll build tech that connects people, powers brands, and makes travel more accessible-on a truly global scale. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, orientation, national origin, disability or age.
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Introduction to the team The Machine Learning Scientist III role sits on the Content Relevance and Generation AI team in the Expedia Technology division of Expedia Group. This team develops and optimizes ranking models with state-of-the-art machine learning techniques to power the selection and ranking of property images and reviews for the multiple brands in our portfolio, while also generating relevant content across the platform. In this role, your expertise and passion for innovation, developing cutting edge technology and implementing industry leading solutions, will improve the experience of millions of travelers and travel partners each year. This is an applied research role: your models will be deployed to our production systems, and your results will be measured objectively via A/B testing, directly impacting our business results. We collaborate closely with the analytics, product, and engineering teams. In this role, you will Work with product management to understand business problems, identify challenges and machine learning opportunities, and scope solutions. Conduct exploratory data analysis, formulate machine learning problems, and build effective and scalable ML models. Partner with data and software engineering teams to deliver your solutions into production. Develop a deep understanding of our data and ML infrastructure. Document and design the technical details of your work. Present your ideas and results to product management, stakeholders, and leadership teams in a clear and effective manner. Collaborate and brainstorm with other team members and across the company. Stay current with advances in ML and GenAI to drive innovation within the team. Qualifications Master's degree required; Ph.D. preferred, in Computer Science, Statistics, Mathematics, Engineering, or a related technical field. You have 3+ years of hands on experience applying machine learning in production, including dataset creation, feature selection and engineering, model development and optimization, and production deployment. You have expertise with Python and related machine learning tools, deep learning frameworks such as TensorFlow or PyTorch, and SQL like query languages for data extraction, transformation, and loading. A strong foundation in Machine Learning fundamentals, statistics, and experimentation. You have real world experience working with large data sets in a distributed computing environment such as Spark. You have good programming practices, ability to write readable, fast code. You have intellectual curiosity and desire to learn new things, techniques and technologies. Experience with Large Language Models (LLMs), including fine tuning, efficient deployment, and architectures. Experience working with data analytics platforms such as Databricks. Hands on experience using workflow orchestration tools (e.g., Airflow, Flyte) to build, schedule, and maintain reliable data and ML pipelines. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
03/02/2026
Full time
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Introduction to the team The Machine Learning Scientist III role sits on the Content Relevance and Generation AI team in the Expedia Technology division of Expedia Group. This team develops and optimizes ranking models with state-of-the-art machine learning techniques to power the selection and ranking of property images and reviews for the multiple brands in our portfolio, while also generating relevant content across the platform. In this role, your expertise and passion for innovation, developing cutting edge technology and implementing industry leading solutions, will improve the experience of millions of travelers and travel partners each year. This is an applied research role: your models will be deployed to our production systems, and your results will be measured objectively via A/B testing, directly impacting our business results. We collaborate closely with the analytics, product, and engineering teams. In this role, you will Work with product management to understand business problems, identify challenges and machine learning opportunities, and scope solutions. Conduct exploratory data analysis, formulate machine learning problems, and build effective and scalable ML models. Partner with data and software engineering teams to deliver your solutions into production. Develop a deep understanding of our data and ML infrastructure. Document and design the technical details of your work. Present your ideas and results to product management, stakeholders, and leadership teams in a clear and effective manner. Collaborate and brainstorm with other team members and across the company. Stay current with advances in ML and GenAI to drive innovation within the team. Qualifications Master's degree required; Ph.D. preferred, in Computer Science, Statistics, Mathematics, Engineering, or a related technical field. You have 3+ years of hands on experience applying machine learning in production, including dataset creation, feature selection and engineering, model development and optimization, and production deployment. You have expertise with Python and related machine learning tools, deep learning frameworks such as TensorFlow or PyTorch, and SQL like query languages for data extraction, transformation, and loading. A strong foundation in Machine Learning fundamentals, statistics, and experimentation. You have real world experience working with large data sets in a distributed computing environment such as Spark. You have good programming practices, ability to write readable, fast code. You have intellectual curiosity and desire to learn new things, techniques and technologies. Experience with Large Language Models (LLMs), including fine tuning, efficient deployment, and architectures. Experience working with data analytics platforms such as Databricks. Hands on experience using workflow orchestration tools (e.g., Airflow, Flyte) to build, schedule, and maintain reliable data and ML pipelines. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
A leading travel tech company in the United Kingdom seeks a Software Development Engineer I to contribute to scalable and high-impact solutions in the travel industry. You will write, test, and maintain quality code while engaging in problem-solving and technical discussions within a collaborative team. The ideal candidate has a degree in Computer Science and proficiency in programming languages like Python or Java. Join us to develop impactful technology that enhances the travel experience globally.
03/02/2026
Full time
A leading travel tech company in the United Kingdom seeks a Software Development Engineer I to contribute to scalable and high-impact solutions in the travel industry. You will write, test, and maintain quality code while engaging in problem-solving and technical discussions within a collaborative team. The ideal candidate has a degree in Computer Science and proficiency in programming languages like Python or Java. Join us to develop impactful technology that enhances the travel experience globally.
A leading travel technology firm in the United Kingdom is seeking a Machine Learning Scientist III to join their Content Relevance and Generation AI team. The ideal candidate will have a Master's degree, over 3 years of experience applying machine learning in production, and expertise in Python and deep learning frameworks. This role offers the chance to innovate and implement cutting-edge solutions that directly impact millions of travelers while collaborating closely with analytics and product teams. A full benefits package is provided.
03/02/2026
Full time
A leading travel technology firm in the United Kingdom is seeking a Machine Learning Scientist III to join their Content Relevance and Generation AI team. The ideal candidate will have a Master's degree, over 3 years of experience applying machine learning in production, and expertise in Python and deep learning frameworks. This role offers the chance to innovate and implement cutting-edge solutions that directly impact millions of travelers while collaborating closely with analytics and product teams. A full benefits package is provided.
A leading travel technology company is looking for a Machine Learning Scientist II to join their Search Product & Optimization team. In this role, you will design and implement machine learning models to optimize bidding strategies and investment allocation across marketing channels. The ideal candidate should have at least 2 years of experience in applying machine learning, strong Python proficiency, and a quantitative background. This role offers a dynamic environment with opportunities for career development and travel-related perks.
03/02/2026
Full time
A leading travel technology company is looking for a Machine Learning Scientist II to join their Search Product & Optimization team. In this role, you will design and implement machine learning models to optimize bidding strategies and investment allocation across marketing channels. The ideal candidate should have at least 2 years of experience in applying machine learning, strong Python proficiency, and a quantitative background. This role offers a dynamic environment with opportunities for career development and travel-related perks.
A leading travel-tech firm is seeking a Senior Backend Engineer to lead the design of high-performance distributed systems for their global platform. This remote-first role requires candidates to have over 7 years of backend development experience, with deep expertise in PHP, particularly Laravel. Responsibilities include improving service scalability and transitioning to a service-oriented architecture. Ideal applicants should be fluent in English and have strong knowledge of distributed systems and event-driven architecture.
03/02/2026
Full time
A leading travel-tech firm is seeking a Senior Backend Engineer to lead the design of high-performance distributed systems for their global platform. This remote-first role requires candidates to have over 7 years of backend development experience, with deep expertise in PHP, particularly Laravel. Responsibilities include improving service scalability and transitioning to a service-oriented architecture. Ideal applicants should be fluent in English and have strong knowledge of distributed systems and event-driven architecture.
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Expedia Group Advertising is redefining how travel brands connect with global audiences. Our Publishing Team owns the end-to-end delivery of display and travel ads across Expedia's white-label and partner platforms. We're building the next generation of video ad infrastructure, AI-powered tooling, and Rapid API integrations to deliver smarter, more engaging ad experiences. This is a frontend-heavy full stack role, ideal for engineers who want to grow across the stack while focusing on building scalable, high-performance UI systems. You'll join a senior, collaborative team that values autonomy, curiosity, and a "Go Get What's Next" mindset. We're looking for someone who thrives in a fast-paced environment, takes initiative, and is excited to shape the future of travel advertising. In this role, you will: Design, build, and maintain scalable, fault tolerant front-end systems for serving ads across Expedia Group platforms Collaborate with engineers, product managers, and designers to deliver high-quality, user-centric features Contribute to full stack development, including backend services in Kotlin/Java and GraphQL APIs Build tooling and reusable components for partners to easily integrate with our ad platform Take ownership of projects from ideation to deployment, with a strong focus on performance and reliability Participate in code reviews, technical design discussions, and agile ceremonies Continuously learn and explore new technologies to improve our stack and developer experience Experience and Qualifications: Experience with React and modern front-end development practices Willingness to work across the full stack and learn backend technologies Solid understanding of software engineering fundamentals and clean code principles Excellent problem-solving and analytical skills Strong communication skills and ability to collaborate with distributed teams Experience with Kotlin, Java, or other backend languages Familiarity with GraphQL and building RESTful APIs Exposure to CI/CD tools like Jenkins, Git, Docker, or TeamCity Experience in Agile/Scrum environments Background in advertising technology or travel tech is a plus Interest in or exposure to machine learning applications Bachelor's degree in Computer Science or a related field 3+ years as a software engineer, preferably in e-commerce, ideally in fast paced, global environments Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: -50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
03/02/2026
Full time
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Expedia Group Advertising is redefining how travel brands connect with global audiences. Our Publishing Team owns the end-to-end delivery of display and travel ads across Expedia's white-label and partner platforms. We're building the next generation of video ad infrastructure, AI-powered tooling, and Rapid API integrations to deliver smarter, more engaging ad experiences. This is a frontend-heavy full stack role, ideal for engineers who want to grow across the stack while focusing on building scalable, high-performance UI systems. You'll join a senior, collaborative team that values autonomy, curiosity, and a "Go Get What's Next" mindset. We're looking for someone who thrives in a fast-paced environment, takes initiative, and is excited to shape the future of travel advertising. In this role, you will: Design, build, and maintain scalable, fault tolerant front-end systems for serving ads across Expedia Group platforms Collaborate with engineers, product managers, and designers to deliver high-quality, user-centric features Contribute to full stack development, including backend services in Kotlin/Java and GraphQL APIs Build tooling and reusable components for partners to easily integrate with our ad platform Take ownership of projects from ideation to deployment, with a strong focus on performance and reliability Participate in code reviews, technical design discussions, and agile ceremonies Continuously learn and explore new technologies to improve our stack and developer experience Experience and Qualifications: Experience with React and modern front-end development practices Willingness to work across the full stack and learn backend technologies Solid understanding of software engineering fundamentals and clean code principles Excellent problem-solving and analytical skills Strong communication skills and ability to collaborate with distributed teams Experience with Kotlin, Java, or other backend languages Familiarity with GraphQL and building RESTful APIs Exposure to CI/CD tools like Jenkins, Git, Docker, or TeamCity Experience in Agile/Scrum environments Background in advertising technology or travel tech is a plus Interest in or exposure to machine learning applications Bachelor's degree in Computer Science or a related field 3+ years as a software engineer, preferably in e-commerce, ideally in fast paced, global environments Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: -50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
About Airalo Alo! Airalo is the world's first eSIM store that helps people connect in over 200+ countries and regions across the globe. We are building the next digital service that revolutionizes the telecom industry. We are a travel-tech company and an equal-opportunity environment that values and executes diversity, inclusion, and equity. Our team is spread across 50+ countries and six continents. What glues us together is our commitment to changing the way you connect. Check out more information about Airalo in our Public Handbook: About you We hope that you care deeply about the quality of your work, the intrinsic worth of tasks, and the success of your team. You are self-disciplined and do not require micromanagement in terms of your skillset and work ethic. You do your best to flourish as an individual every day while working hard to foster a collaborative team environment. You believe in the importance of being - and staying - authentic, honest, positive, and kind. You are a good interlocutor with clear and concise communication. You are able to manage multiple projects, have an analytical mind, pay keen attention to detail, and love to get your hands dirty. You are cognizant, tolerant, and welcoming of vulnerabilities and cultural differences. About the Role Position: Full-time / Employee Location: Remote-first Benefits: Health Insurance, work-from-anywhere stipend, annual wellness & learning credits, annual all-expenses-paid company retreat in a gorgeous destination & other benefits On-Call: Participating in our on-call rotation is a core expectation of this role. It's essential for maintaining 24/7 service reliability across our global operations, ensuring our systems remain resilient and our customers experience uninterrupted service, regardless of time zone or geography. Paid Rotation: We offer standby fees + overtime pay. Delayed Start: No on-call duties for your first 6 months. Rest & Recovery: Guaranteed rest periods and flexible hours following night incidents. Shared Load: Rotations are split (Weekdays vs. Weekends) to minimize fatigue. Please refer to the On-Call Policy in the Airalo Handbook for full details: Are you a seasoned engineer who thrives on solving complex architectural puzzles in PHP? Join our team as a Senior Backend Engineer where you will lead the evolution of our global platform with more than 20 million users. We value deep technical mastery, a mentor mindset, and the ability to balance rapid innovation with system stability. While we use Laravel, we highly value the architectural rigor of seasoned Symfony experts ready to pick up Laravel and apply their skills to our ecosystem. Your main responsibilities will be to: Lead the design of high-performance distributed systems capable of handling global traffic Develop and refine services to improve scalability and efficiency Drive the transition toward a service-oriented architecture (SOA) to ensure modularity and resilience Set the bar for code quality by enforcing SOLID principles, design patterns, and testing standards Actively coach mid-level engineers through deep code reviews and technical knowledge sharing Identify bottlenecks in services and implement advanced caching and database strategies Partner with Product and DevOps to translate complex requirements into scalable technical roadmaps Does this sound like you: 7+ years of professional backend development experience with a deep mastery of PHP 4+ years of building enterprise-grade applications in Laravel or an equivalent senior background in Symfony Mastery of distributed systems, event-driven architecture, and messaging patterns like SQS or Pub/Sub Knowledge of SQL and NoSQL including performance tuning and handling transactions at scale Experience architecting on AWS and managing containerized environments with Docker A champion of clean code, automated testing, and CI/CD best practices Fluent English with the ability to explain complex technical trade-offs to stakeholders Bonus: Experience with SaaS/PaaS, SOA, or microservices architecture. Experience with eSIM, or GSMA technologies. Familiarity with Traveltech solutions. Experience in building or maintaining custom SDKs If you are interested in this position, please apply via the link. Please note that to be considered for this role, you must reside in and be fully eligible to work in either the UK or Spain. Proof of a valid right to work in one of these two countries will be required. By applying, you acknowledge and agree that, in case of successful application, Airalo may request to run background checks as a condition for entering into an agreement with you. Rest assured that these checks will only occur upon your prior consent and at the end of the selection process, and will be strictly limited to what is allowed under the laws that are applicable to you. All data that you share or that we collect in connection with such checks will be processed in accordance with our Privacy Policy, available here: We sincerely thank all applicants in advance for submitting their interest in this opportunity. Airalo is an equal-opportunity employer and values diversity, equity & inclusion. We do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to providing reasonable accommodations upon request for individuals with disabilities throughout our job interview process.
03/02/2026
Full time
About Airalo Alo! Airalo is the world's first eSIM store that helps people connect in over 200+ countries and regions across the globe. We are building the next digital service that revolutionizes the telecom industry. We are a travel-tech company and an equal-opportunity environment that values and executes diversity, inclusion, and equity. Our team is spread across 50+ countries and six continents. What glues us together is our commitment to changing the way you connect. Check out more information about Airalo in our Public Handbook: About you We hope that you care deeply about the quality of your work, the intrinsic worth of tasks, and the success of your team. You are self-disciplined and do not require micromanagement in terms of your skillset and work ethic. You do your best to flourish as an individual every day while working hard to foster a collaborative team environment. You believe in the importance of being - and staying - authentic, honest, positive, and kind. You are a good interlocutor with clear and concise communication. You are able to manage multiple projects, have an analytical mind, pay keen attention to detail, and love to get your hands dirty. You are cognizant, tolerant, and welcoming of vulnerabilities and cultural differences. About the Role Position: Full-time / Employee Location: Remote-first Benefits: Health Insurance, work-from-anywhere stipend, annual wellness & learning credits, annual all-expenses-paid company retreat in a gorgeous destination & other benefits On-Call: Participating in our on-call rotation is a core expectation of this role. It's essential for maintaining 24/7 service reliability across our global operations, ensuring our systems remain resilient and our customers experience uninterrupted service, regardless of time zone or geography. Paid Rotation: We offer standby fees + overtime pay. Delayed Start: No on-call duties for your first 6 months. Rest & Recovery: Guaranteed rest periods and flexible hours following night incidents. Shared Load: Rotations are split (Weekdays vs. Weekends) to minimize fatigue. Please refer to the On-Call Policy in the Airalo Handbook for full details: Are you a seasoned engineer who thrives on solving complex architectural puzzles in PHP? Join our team as a Senior Backend Engineer where you will lead the evolution of our global platform with more than 20 million users. We value deep technical mastery, a mentor mindset, and the ability to balance rapid innovation with system stability. While we use Laravel, we highly value the architectural rigor of seasoned Symfony experts ready to pick up Laravel and apply their skills to our ecosystem. Your main responsibilities will be to: Lead the design of high-performance distributed systems capable of handling global traffic Develop and refine services to improve scalability and efficiency Drive the transition toward a service-oriented architecture (SOA) to ensure modularity and resilience Set the bar for code quality by enforcing SOLID principles, design patterns, and testing standards Actively coach mid-level engineers through deep code reviews and technical knowledge sharing Identify bottlenecks in services and implement advanced caching and database strategies Partner with Product and DevOps to translate complex requirements into scalable technical roadmaps Does this sound like you: 7+ years of professional backend development experience with a deep mastery of PHP 4+ years of building enterprise-grade applications in Laravel or an equivalent senior background in Symfony Mastery of distributed systems, event-driven architecture, and messaging patterns like SQS or Pub/Sub Knowledge of SQL and NoSQL including performance tuning and handling transactions at scale Experience architecting on AWS and managing containerized environments with Docker A champion of clean code, automated testing, and CI/CD best practices Fluent English with the ability to explain complex technical trade-offs to stakeholders Bonus: Experience with SaaS/PaaS, SOA, or microservices architecture. Experience with eSIM, or GSMA technologies. Familiarity with Traveltech solutions. Experience in building or maintaining custom SDKs If you are interested in this position, please apply via the link. Please note that to be considered for this role, you must reside in and be fully eligible to work in either the UK or Spain. Proof of a valid right to work in one of these two countries will be required. By applying, you acknowledge and agree that, in case of successful application, Airalo may request to run background checks as a condition for entering into an agreement with you. Rest assured that these checks will only occur upon your prior consent and at the end of the selection process, and will be strictly limited to what is allowed under the laws that are applicable to you. All data that you share or that we collect in connection with such checks will be processed in accordance with our Privacy Policy, available here: We sincerely thank all applicants in advance for submitting their interest in this opportunity. Airalo is an equal-opportunity employer and values diversity, equity & inclusion. We do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to providing reasonable accommodations upon request for individuals with disabilities throughout our job interview process.
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated, and when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Software Development Engineer II (Backend) Expedia Product & Technology builds innovative products, services, and tools to deliver high quality experiences for travelers, partners, and our employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalized experiences for the traveler and our partners that drive loyalty and customer satisfaction. The Expedia Group Pricing pillar is tasked with giving the customer a simple, clear, accurate, transparent pricing experience throughout their shopping and booking journeys. We do this by putting the customer first, creating capabilities and experiences that can be shared and presented to the customer that meet the travelers' expectations in locally relevant ways and adhere to regulatory norms. The pricing platform supports millions of users every year in finding suitable travel products using technologies such as Java, Scala, Kotlin, Spring, MSSQL, DynamoDB, Redis, etc. We encourage experimentation with new technologies while maintaining a healthy balance between short term and long term goals. We deeply care about building a great experience to delight our customers. Our goal is to enhance every traveler's experience and make it better! In this role, you will: Design, develop, and maintain high throughput, low latency distributed services that deliver efficient, optimal pricing solutions at scale. Implement robust caching mechanisms to enhance application performance, reduce latency, and optimize system resource utilization. Participate actively in architecture reviews, writing thorough and well supported technical documentation, and conducting detailed code reviews. Mentor team members, sharing knowledge and expertise to foster a culture of continuous technical growth and collaboration across teams. Identify opportunities for optimizing existing solutions and proactively propose enhancements that improve system efficiency and reliability. Analyze complex problems, deconstruct them into manageable milestones, and collaboratively deliver sustainable technical solutions. Understand and influence alignment between business objectives, technical architecture, and internal/external stakeholder priorities. Experience and qualifications: Bachelor's Degree in Computer Science or equivalent (3+ years of professional software development experience), or Master's Degree (2+ years post degree experience). Hands on experience in software development using Java or similar object oriented programming languages, or Scala or Kotlin or similar functional languages. Proven experience building and operating scalable distributed systems and services within AWS cloud infrastructure or similar technologies. Designed and implemented distributed, event driven systems using Kafka Streams, AWS Kinesis, or similar. Optimize for low latency and high throughput processing (1M+ TPS) microservices. Implemented auto scaling, blue green deployments, and canary releases and Build and maintain SLAs, SLOs, and SLIs for critical services. Strong practical knowledge and experience developing robust caching solutions, utilizing technologies such as Redis, Couchbase, Memcached, or similar distributed caching tools. Experience working successfully on Agile development teams with a minimum of 5 engineers, understanding modern agile methodologies, version control systems, continuous integration, and continuous delivery practices. Understanding of relational and NoSQL databases, data structures, API patterns, and service oriented architectures. Commitment to technical excellence, test driven development practices, and proactive monitoring. Exceptional analytical and problem solving skills, high quality coding standards, and a sense of ownership and accountability for delivered solutions. Excellent communication and interpersonal skills, capable of thriving and collaborating within a globally distributed team environment. If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
03/02/2026
Full time
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated, and when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Software Development Engineer II (Backend) Expedia Product & Technology builds innovative products, services, and tools to deliver high quality experiences for travelers, partners, and our employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalized experiences for the traveler and our partners that drive loyalty and customer satisfaction. The Expedia Group Pricing pillar is tasked with giving the customer a simple, clear, accurate, transparent pricing experience throughout their shopping and booking journeys. We do this by putting the customer first, creating capabilities and experiences that can be shared and presented to the customer that meet the travelers' expectations in locally relevant ways and adhere to regulatory norms. The pricing platform supports millions of users every year in finding suitable travel products using technologies such as Java, Scala, Kotlin, Spring, MSSQL, DynamoDB, Redis, etc. We encourage experimentation with new technologies while maintaining a healthy balance between short term and long term goals. We deeply care about building a great experience to delight our customers. Our goal is to enhance every traveler's experience and make it better! In this role, you will: Design, develop, and maintain high throughput, low latency distributed services that deliver efficient, optimal pricing solutions at scale. Implement robust caching mechanisms to enhance application performance, reduce latency, and optimize system resource utilization. Participate actively in architecture reviews, writing thorough and well supported technical documentation, and conducting detailed code reviews. Mentor team members, sharing knowledge and expertise to foster a culture of continuous technical growth and collaboration across teams. Identify opportunities for optimizing existing solutions and proactively propose enhancements that improve system efficiency and reliability. Analyze complex problems, deconstruct them into manageable milestones, and collaboratively deliver sustainable technical solutions. Understand and influence alignment between business objectives, technical architecture, and internal/external stakeholder priorities. Experience and qualifications: Bachelor's Degree in Computer Science or equivalent (3+ years of professional software development experience), or Master's Degree (2+ years post degree experience). Hands on experience in software development using Java or similar object oriented programming languages, or Scala or Kotlin or similar functional languages. Proven experience building and operating scalable distributed systems and services within AWS cloud infrastructure or similar technologies. Designed and implemented distributed, event driven systems using Kafka Streams, AWS Kinesis, or similar. Optimize for low latency and high throughput processing (1M+ TPS) microservices. Implemented auto scaling, blue green deployments, and canary releases and Build and maintain SLAs, SLOs, and SLIs for critical services. Strong practical knowledge and experience developing robust caching solutions, utilizing technologies such as Redis, Couchbase, Memcached, or similar distributed caching tools. Experience working successfully on Agile development teams with a minimum of 5 engineers, understanding modern agile methodologies, version control systems, continuous integration, and continuous delivery practices. Understanding of relational and NoSQL databases, data structures, API patterns, and service oriented architectures. Commitment to technical excellence, test driven development practices, and proactive monitoring. Exceptional analytical and problem solving skills, high quality coding standards, and a sense of ownership and accountability for delivered solutions. Excellent communication and interpersonal skills, capable of thriving and collaborating within a globally distributed team environment. If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
A leading travel technology company in the UK is seeking a Software Development Engineer II (Backend) to design and maintain high-throughput distributed services. The ideal candidate should have experience in Java or similar languages and cloud infrastructures, with a focus on optimizing system performance. Join this innovative team to enhance the customer journey through cutting-edge technology and contribute to a supportive and collaborative workplace culture.
03/02/2026
Full time
A leading travel technology company in the UK is seeking a Software Development Engineer II (Backend) to design and maintain high-throughput distributed services. The ideal candidate should have experience in Java or similar languages and cloud infrastructures, with a focus on optimizing system performance. Join this innovative team to enhance the customer journey through cutting-edge technology and contribute to a supportive and collaborative workplace culture.
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Machine Learning Engineer II, Marketing Testing Introduction to team The Traveler Business Team builds and drives growth for our global consumer businesses-Expedia, and Vrbo. This division creates compelling and differentiated traveler value for each brand by setting the strategic vision, operating strategy, and plan. Responsibilities include investment allocation and prioritization, P&L accountability, and leading cross functional teams across Expedia Group, who are all held accountable to a single scorecard. Within this division, our Marketing Measurement Analytics team is dedicated to driving data informed marketing decisions across Expedia Group's portfolio of brands. We build sophisticated measurement capabilities and experimentation platforms that enable marketers to optimize their strategies and demonstrate clear business impact. About the Role We are seeking a Machine Learning Engineer to work on two key areas within our marketing analytics team. First, you'll enhance our production experimentation platform that runs large scale tests, helping marketers design, launch, and evaluate experiments efficiently and reliably. Second, you'll help build new flexible measurement tools by creating open source style add ons and turning research prototypes into production ready solutions. This includes developing reusable code libraries for quick analysis and designing tools that work alongside our existing platform. If you're passionate about building scalable ML systems that drive business impact and enjoy turning innovative prototypes into robust production tools, this could be the perfect role for you! You'll play a key role in maintaining our current experimentation platform while helping to build the next generation of marketing measurement tools. In this role, you will: Support software engineering teams to maintain platform performance, troubleshoot issues, and enhance logging systems to ensure reliable operation for 300+ annual experiments Optimize core testing code including stratified sampling, simulation and regression frameworks Build scalable data pipelines for experiment execution and analysis Build flexible measurement tools, create reusable code libraries, and transform research prototypes into production ready solutions Collaborate with data scientists and software engineers to translate requirements and coordinate deployment of tools into production Experience and qualifications: Required: Bachelor's or Master's degree in Computer Science, Engineering, Mathematics, or related technical field; or equivalent professional experience Proficient in Python, SQL, and PySpark for large scale data processing Experience building scalable systems, preferably with ML/AI components in production environments Experience with automated testing and deployment practices, including version control, unit testing, and deployment pipelines (e.g. GitHub Actions) Understanding of system internals, including memory management, caching, and distributed computing Experience turning prototypes into production code and building flexible, reusable code frameworks Foundational knowledge in machine learning principles and statistical methods Desirable: Familiarity with cloud platforms (AWS, GCP) Familiarity with open source development practices and creating modular, adaptable tools Knowledge of A/B testing methodologies, stratified sampling, and experimental design principles Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: -50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
02/02/2026
Full time
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Machine Learning Engineer II, Marketing Testing Introduction to team The Traveler Business Team builds and drives growth for our global consumer businesses-Expedia, and Vrbo. This division creates compelling and differentiated traveler value for each brand by setting the strategic vision, operating strategy, and plan. Responsibilities include investment allocation and prioritization, P&L accountability, and leading cross functional teams across Expedia Group, who are all held accountable to a single scorecard. Within this division, our Marketing Measurement Analytics team is dedicated to driving data informed marketing decisions across Expedia Group's portfolio of brands. We build sophisticated measurement capabilities and experimentation platforms that enable marketers to optimize their strategies and demonstrate clear business impact. About the Role We are seeking a Machine Learning Engineer to work on two key areas within our marketing analytics team. First, you'll enhance our production experimentation platform that runs large scale tests, helping marketers design, launch, and evaluate experiments efficiently and reliably. Second, you'll help build new flexible measurement tools by creating open source style add ons and turning research prototypes into production ready solutions. This includes developing reusable code libraries for quick analysis and designing tools that work alongside our existing platform. If you're passionate about building scalable ML systems that drive business impact and enjoy turning innovative prototypes into robust production tools, this could be the perfect role for you! You'll play a key role in maintaining our current experimentation platform while helping to build the next generation of marketing measurement tools. In this role, you will: Support software engineering teams to maintain platform performance, troubleshoot issues, and enhance logging systems to ensure reliable operation for 300+ annual experiments Optimize core testing code including stratified sampling, simulation and regression frameworks Build scalable data pipelines for experiment execution and analysis Build flexible measurement tools, create reusable code libraries, and transform research prototypes into production ready solutions Collaborate with data scientists and software engineers to translate requirements and coordinate deployment of tools into production Experience and qualifications: Required: Bachelor's or Master's degree in Computer Science, Engineering, Mathematics, or related technical field; or equivalent professional experience Proficient in Python, SQL, and PySpark for large scale data processing Experience building scalable systems, preferably with ML/AI components in production environments Experience with automated testing and deployment practices, including version control, unit testing, and deployment pipelines (e.g. GitHub Actions) Understanding of system internals, including memory management, caching, and distributed computing Experience turning prototypes into production code and building flexible, reusable code frameworks Foundational knowledge in machine learning principles and statistical methods Desirable: Familiarity with cloud platforms (AWS, GCP) Familiarity with open source development practices and creating modular, adaptable tools Knowledge of A/B testing methodologies, stratified sampling, and experimental design principles Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: -50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
A leading travel technology company in the United Kingdom is seeking a Machine Learning Engineer III to design and implement scalable ML systems that optimize ad selection and campaign performance. Collaborating in a team of experts, you will deliver impactful solutions using your extensive programming skills and experience with ML. This role offers a comprehensive benefits package and a flexible work model to fuel your passion for travel and ensure a rewarding career path.
02/02/2026
Full time
A leading travel technology company in the United Kingdom is seeking a Machine Learning Engineer III to design and implement scalable ML systems that optimize ad selection and campaign performance. Collaborating in a team of experts, you will deliver impactful solutions using your extensive programming skills and experience with ML. This role offers a comprehensive benefits package and a flexible work model to fuel your passion for travel and ensure a rewarding career path.
Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Expedia Group's Advertising Engineering team is dedicated to building innovative solutions that empower travel advertisers to connect with millions of travelers worldwide. Our platform enables brands to leverage Expedia's global network of leading travel brands and sites, offering a diverse portfolio of advertising and sponsorship opportunities. With over 200 branded sites in 75 countries and 35 languages, we help advertisers reach 112 million monthly unique visitors. As a Machine Learning Engineer III on this team, you will design and implement scalable machine learning systems that optimize ad selection, campaign performance, and creative personalization at a global scale. You will work in a highly collaborative environment with ML scientists and software engineers to deliver impactful solutions for the advertising domain. In this role you will: Design, implement, and maintain large-scale machine learning pipelines for advertising use cases, including feature engineering, model training, validation, and deployment. Build real-time and batch data processing systems to support ad targeting, campaign optimization, and experimentation. Collaborate with ML scientists and software engineers to integrate ML models into production systems and deliver measurable business impact. Develop APIs and services that enable ML-driven advertising solutions across Expedia Group's global platform. Optimize Spark-based applications for large-scale data processing and ensure system reliability and performance. Implement strategies for training models on massive datasets using distributed computing and GPU acceleration. Contribute to design discussions and code reviews, ensuring best practices in ML engineering and software development. Mentor junior engineers and share knowledge within the team and broader engineering community. Continuously explore new technologies and methodologies to improve ML systems and advertising solutions. Participate in a community of practice to share and gain knowledge across the organization. Required qualifications: Bachelor's or Master's degree in Computer Science, Engineering, or equivalent experience. 5+ years of professional experience with a Bachelor's degree OR 3+ years with a Master's degree. Proven experience building and deploying ML pipelines in production environments. Strong programming skills in Python and at least one other language (e.g., Scala or Java). Expertise in Spark and distributed data processing frameworks. Proficiency with ML libraries such as PyTorch and TensorFlow. Experience with cloud platforms (AWS, EMR, Kubernetes, Docker) and ML platforms (Databricks, SageMaker). Familiarity with workflow management tools (e.g., Airflow). Strong understanding of software design principles, data structures, and design patterns. Ability to debug, test, and monitor complex systems effectively. Preferred: qualifications: Experience with real-time applications and streaming architectures. Knowledge of advertising technology, e-commerce, or travel industry. Hands-on experience with large-scale model training and optimization using GPUs or distributed systems. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: -50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
02/02/2026
Full time
Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We're building a more open world. Join us. Expedia Group's Advertising Engineering team is dedicated to building innovative solutions that empower travel advertisers to connect with millions of travelers worldwide. Our platform enables brands to leverage Expedia's global network of leading travel brands and sites, offering a diverse portfolio of advertising and sponsorship opportunities. With over 200 branded sites in 75 countries and 35 languages, we help advertisers reach 112 million monthly unique visitors. As a Machine Learning Engineer III on this team, you will design and implement scalable machine learning systems that optimize ad selection, campaign performance, and creative personalization at a global scale. You will work in a highly collaborative environment with ML scientists and software engineers to deliver impactful solutions for the advertising domain. In this role you will: Design, implement, and maintain large-scale machine learning pipelines for advertising use cases, including feature engineering, model training, validation, and deployment. Build real-time and batch data processing systems to support ad targeting, campaign optimization, and experimentation. Collaborate with ML scientists and software engineers to integrate ML models into production systems and deliver measurable business impact. Develop APIs and services that enable ML-driven advertising solutions across Expedia Group's global platform. Optimize Spark-based applications for large-scale data processing and ensure system reliability and performance. Implement strategies for training models on massive datasets using distributed computing and GPU acceleration. Contribute to design discussions and code reviews, ensuring best practices in ML engineering and software development. Mentor junior engineers and share knowledge within the team and broader engineering community. Continuously explore new technologies and methodologies to improve ML systems and advertising solutions. Participate in a community of practice to share and gain knowledge across the organization. Required qualifications: Bachelor's or Master's degree in Computer Science, Engineering, or equivalent experience. 5+ years of professional experience with a Bachelor's degree OR 3+ years with a Master's degree. Proven experience building and deploying ML pipelines in production environments. Strong programming skills in Python and at least one other language (e.g., Scala or Java). Expertise in Spark and distributed data processing frameworks. Proficiency with ML libraries such as PyTorch and TensorFlow. Experience with cloud platforms (AWS, EMR, Kubernetes, Docker) and ML platforms (Databricks, SageMaker). Familiarity with workflow management tools (e.g., Airflow). Strong understanding of software design principles, data structures, and design patterns. Ability to debug, test, and monitor complex systems effectively. Preferred: qualifications: Experience with real-time applications and streaming architectures. Knowledge of advertising technology, e-commerce, or travel industry. Hands-on experience with large-scale model training and optimization using GPUs or distributed systems. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia Expedia Partner Solutions, Vrbo , trivago , Orbitz , Travelocity , Hotwire , Wotif , ebookers , CheapTickets , Expedia Group Media Solutions, Expedia Local Expert and Expedia Cruises . 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: -50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you're confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain The official website to find and apply for job openings at Expedia Group is Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.
A travel technology company is looking for a Machine Learning Engineer II to enhance their marketing analytics. This role involves developing scalable systems, building data pipelines, and turning prototypes into production-ready solutions. Candidates should have strong skills in Python, SQL, and PySpark, along with a technical degree or equivalent experience. The position offers competitive benefits and the opportunity to work with cutting-edge technology in the travel industry.
02/02/2026
Full time
A travel technology company is looking for a Machine Learning Engineer II to enhance their marketing analytics. This role involves developing scalable systems, building data pipelines, and turning prototypes into production-ready solutions. Candidates should have strong skills in Python, SQL, and PySpark, along with a technical degree or equivalent experience. The position offers competitive benefits and the opportunity to work with cutting-edge technology in the travel industry.