Xcelirate
Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible. Who are we looking for? The Data Engineer will focus on designing, developing, and maintaining robust data infrastructure to support use cases such as fraud detection but also general data engineering. The position emphasizes building scalable, high-performing data pipelines and storage systems for fraud use cases. Although this role involves light integration with machine learning models, its primary responsibility is creating the technical foundation that powers such use cases of fraud detection, analytics and reporting. What will you be doing? Develop and Maintain Pipelines: build and maintain efficient, scalable data pipelines for use cases such as fraud detection Support Fraud Analytics: enable analysts and product teams to identify and address emerging fraud patterns through engineered datasets Integrate Detection Models: collaborate with teams to operationalise external fraud detection models and integrate them into the data infrastructure Data Storage Optimisation: design and optimise data storage solutions for analysing fraud signals and managing historical data Feature Engineering: create fraud-specific datasets and features to enhance detection accuracy while supporting business and analytics teams Pipeline Monitoring and Optimisation: monitor fraud data pipelines to ensure system reliability and troubleshoot performance issues Best Practices Documentation: establish and document best practices for fraud-related data engineering Cross-Team Collaboration: partner with data, product, and engineering teams to proactively address fraud trends What will you bring along? 3+ years of experience as a data engineer with some expertise in fraud detection systems or similar Proficiency in Python and SQL, with knowledge of orchestration and transformation tools (e.g., Apache Airflow, DBT) Strong knowledge of database design, query optimisation, and ETL/ELT workflows, ideally including relational databases such as MySQL and columnar databases such as ClickHouse Experience building and maintaining production data pipelines Familiarity with leveraging machine learning models, primarily as a component of the broader data pipeline, including model registries such as MLflow Understanding of CI/CD processes for data pipelines Hands on experience with data visualization platforms for trend reporting (e.g., Tableau, Superset, Metabase) Ability to support with model serving components, such as Flask or FastAPI Familiarity with statistical techniques for fraud trend analysis and reporting Experience with Git and version control in collaborative workflows How We Support Our Contractors: Annualised rate of €98,000 + retention bonus scheme: Competitive contractor rate with a generous bonus paid every 6 months based on your time with us. Top Notch Workstation: We provide the latest MacBook, branded merchandise, and everything you need for an optimal work environment. Global Co Working Access: Work from a global network of co working spaces to keep your work life dynamic and flexible. Flexibility: Enjoy full flexibility in work location and hours, supporting a work life balance tailored to your needs. Events and Gatherings: Participate in exciting events throughout the year, including team gatherings, cultural events, and other fun activities. At Xcelirate, we're committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, or veteran status. We pride ourselves in being an equal opportunity workplace.
Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible. Who are we looking for? The Data Engineer will focus on designing, developing, and maintaining robust data infrastructure to support use cases such as fraud detection but also general data engineering. The position emphasizes building scalable, high-performing data pipelines and storage systems for fraud use cases. Although this role involves light integration with machine learning models, its primary responsibility is creating the technical foundation that powers such use cases of fraud detection, analytics and reporting. What will you be doing? Develop and Maintain Pipelines: build and maintain efficient, scalable data pipelines for use cases such as fraud detection Support Fraud Analytics: enable analysts and product teams to identify and address emerging fraud patterns through engineered datasets Integrate Detection Models: collaborate with teams to operationalise external fraud detection models and integrate them into the data infrastructure Data Storage Optimisation: design and optimise data storage solutions for analysing fraud signals and managing historical data Feature Engineering: create fraud-specific datasets and features to enhance detection accuracy while supporting business and analytics teams Pipeline Monitoring and Optimisation: monitor fraud data pipelines to ensure system reliability and troubleshoot performance issues Best Practices Documentation: establish and document best practices for fraud-related data engineering Cross-Team Collaboration: partner with data, product, and engineering teams to proactively address fraud trends What will you bring along? 3+ years of experience as a data engineer with some expertise in fraud detection systems or similar Proficiency in Python and SQL, with knowledge of orchestration and transformation tools (e.g., Apache Airflow, DBT) Strong knowledge of database design, query optimisation, and ETL/ELT workflows, ideally including relational databases such as MySQL and columnar databases such as ClickHouse Experience building and maintaining production data pipelines Familiarity with leveraging machine learning models, primarily as a component of the broader data pipeline, including model registries such as MLflow Understanding of CI/CD processes for data pipelines Hands on experience with data visualization platforms for trend reporting (e.g., Tableau, Superset, Metabase) Ability to support with model serving components, such as Flask or FastAPI Familiarity with statistical techniques for fraud trend analysis and reporting Experience with Git and version control in collaborative workflows How We Support Our Contractors: Annualised rate of €98,000 + retention bonus scheme: Competitive contractor rate with a generous bonus paid every 6 months based on your time with us. Top Notch Workstation: We provide the latest MacBook, branded merchandise, and everything you need for an optimal work environment. Global Co Working Access: Work from a global network of co working spaces to keep your work life dynamic and flexible. Flexibility: Enjoy full flexibility in work location and hours, supporting a work life balance tailored to your needs. Events and Gatherings: Participate in exciting events throughout the year, including team gatherings, cultural events, and other fun activities. At Xcelirate, we're committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, or veteran status. We pride ourselves in being an equal opportunity workplace.
Xcelirate
Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible! What are we looking for? You're a principal-level engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good judgment, minimal ceremony, and no interest in making it a bigger deal than it is. You are still, genuinely, happiest close to the code and driving projects forward. You are also more than happy to take ownership over driving them forward. Programming languages don't impress you. You've used enough of them to treat them as what they are: different syntaxes for expressing the same fundamental ideas, some more suited to the problem than others, none worth being religious about. You've written things in languages that no longer exist, maintained systems built on frameworks that peaked at a conference talk in 2013, and learned the hard way that novelty and progress are not the same thing. When you join a new codebase, you go quiet and start reading. You find the abstractions that are holding up weight, identify the ones that are just decorative, and build a mental model of the whole thing before you touch anything. Then you make one small, careful change, and the way it lands tells you everything you didn't yet know. You have strong, well-earned instincts around performance. Hot-path optimisation, speculative execution, lazy initialisation: these feel obvious to you, and you've mostly stopped being surprised when they don't feel obvious to others. You know where latency actually hides, and it's rarely where the team thinks it is. You profile before you optimize, but you usually already know what you're going to find. Your system design isn't flashy. It's load-bearing. You've seen enough over-engineered architectures to have a near-allergic reaction to complexity that isn't earning its keep. When you design something, it's because you've thought about what it needs to do in two years, not just the next sprint. Once you've got your footing in the project, you'll build the team around it. You know how to hire for this kind of work. You're looking for engineers with genuine curiosity, sound instincts, and the humility to learn a system before trying to improve it. You'll form a team that can own hard problems. Getting that right is important to you, but it's not where you live. Where you live is in the work itself. In a well-reasoned commit. In a system that behaves exactly as it should at 3am when nobody's watching. In the quiet satisfaction of a codebase that's a little more honest than it was before you touched it. The homelab is always running something. You'll tell us about it if we ask, and we're asking. If this reads less like a job description and more like a description of you, good. That's what we were going for. What will you be doing? Manage your own and your team's time while adhering to priorities set by the company Own complex engineering problems end-to-end, from problem framing and design through to delivery and iteration Take responsibility for critical areas of the platform, ensuring they remain reliable, performant, and maintainable Build new features and improve existing ones across our platforms. Refactor legacy and modern codebases pragmatically, balancing long-term health with delivery needs Write tests (unit, integration, and end-to-end) to ensure software reliability. Be involved in every phase of the software lifecycle, from ideation to deployment. Participate in (and at times lead) deep technical discussions, helping drive sound decisions and trade-offs Work hands-on across backend and frontend systems, stepping in wherever the problem lives Identify inefficiencies and help streamline workflows, reducing unnecessary work. Collaborate closely with other senior engineers, raising the bar through example rather than authority Take ownership of your work, ensuring high-quality results and maintainable solutions. What will you bring along? 15+ years hands-on experience building and maintaining complex web applications Have been directly responsible for development and successful (or not so successful) release of multiple major projects from their inception to production and subsequent operation In your portfolio there are multiple projects that you have worked on for more than 2.5 years Clear technical communication; able to explain and defend design decisions to senior engineers and non-engineers alike Expert PHP developer (12+ years); Symfony or equivalent frameworks 10+ years modern JavaScript; React or Vue (Next/Nuxt a plus) Expert level knowledge in at least one more programming language (Python a plus) Full-stack architecture expertise: monoliths, services, and hybrids Power user cloud deployment and scaling (AWS preferred) experience and abilities Expert Linux user; including daily containerized workflows with Docker Expert in infrastructure automation: Terraform, Ansible Power user level CI/CD pipeline and release workflow ownership Experience in automated testing: unit, integration, E2E; TDD where appropriate Expert level knowledge in and around web security fundamentals: auth, authorization, data protection, secure coding Legacy + modern codebase fluency; ability to work on incremental modernization Strong independent technical ownership and accountability We are always looking for the best candidates, so if you think you would be a good fit even if you don't meet 100% of the requirements, we would love to hear from you! How We Support Our Contractors An annualised rate of €145,000 + retention bonus scheme: Competitive contractor rate with a generous bonus paid every 6 months based on your time with us. Top-Notch Workstation: We provide a MacBook or Dell, branded merchandise, and everything you need for an optimal work environment. Global Co-Working Access: Work from a global network of co-working spaces to keep your work-life dynamic and flexible. Flexibility: Enjoy full flexibility in work location and hours, supporting a work-life balance tailored to your needs. Events and Gatherings: Participate in exciting events throughout the year, including team gatherings, cultural events, and other fun activities.
Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible! What are we looking for? You're a principal-level engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good judgment, minimal ceremony, and no interest in making it a bigger deal than it is. You are still, genuinely, happiest close to the code and driving projects forward. You are also more than happy to take ownership over driving them forward. Programming languages don't impress you. You've used enough of them to treat them as what they are: different syntaxes for expressing the same fundamental ideas, some more suited to the problem than others, none worth being religious about. You've written things in languages that no longer exist, maintained systems built on frameworks that peaked at a conference talk in 2013, and learned the hard way that novelty and progress are not the same thing. When you join a new codebase, you go quiet and start reading. You find the abstractions that are holding up weight, identify the ones that are just decorative, and build a mental model of the whole thing before you touch anything. Then you make one small, careful change, and the way it lands tells you everything you didn't yet know. You have strong, well-earned instincts around performance. Hot-path optimisation, speculative execution, lazy initialisation: these feel obvious to you, and you've mostly stopped being surprised when they don't feel obvious to others. You know where latency actually hides, and it's rarely where the team thinks it is. You profile before you optimize, but you usually already know what you're going to find. Your system design isn't flashy. It's load-bearing. You've seen enough over-engineered architectures to have a near-allergic reaction to complexity that isn't earning its keep. When you design something, it's because you've thought about what it needs to do in two years, not just the next sprint. Once you've got your footing in the project, you'll build the team around it. You know how to hire for this kind of work. You're looking for engineers with genuine curiosity, sound instincts, and the humility to learn a system before trying to improve it. You'll form a team that can own hard problems. Getting that right is important to you, but it's not where you live. Where you live is in the work itself. In a well-reasoned commit. In a system that behaves exactly as it should at 3am when nobody's watching. In the quiet satisfaction of a codebase that's a little more honest than it was before you touched it. The homelab is always running something. You'll tell us about it if we ask, and we're asking. If this reads less like a job description and more like a description of you, good. That's what we were going for. What will you be doing? Manage your own and your team's time while adhering to priorities set by the company Own complex engineering problems end-to-end, from problem framing and design through to delivery and iteration Take responsibility for critical areas of the platform, ensuring they remain reliable, performant, and maintainable Build new features and improve existing ones across our platforms. Refactor legacy and modern codebases pragmatically, balancing long-term health with delivery needs Write tests (unit, integration, and end-to-end) to ensure software reliability. Be involved in every phase of the software lifecycle, from ideation to deployment. Participate in (and at times lead) deep technical discussions, helping drive sound decisions and trade-offs Work hands-on across backend and frontend systems, stepping in wherever the problem lives Identify inefficiencies and help streamline workflows, reducing unnecessary work. Collaborate closely with other senior engineers, raising the bar through example rather than authority Take ownership of your work, ensuring high-quality results and maintainable solutions. What will you bring along? 15+ years hands-on experience building and maintaining complex web applications Have been directly responsible for development and successful (or not so successful) release of multiple major projects from their inception to production and subsequent operation In your portfolio there are multiple projects that you have worked on for more than 2.5 years Clear technical communication; able to explain and defend design decisions to senior engineers and non-engineers alike Expert PHP developer (12+ years); Symfony or equivalent frameworks 10+ years modern JavaScript; React or Vue (Next/Nuxt a plus) Expert level knowledge in at least one more programming language (Python a plus) Full-stack architecture expertise: monoliths, services, and hybrids Power user cloud deployment and scaling (AWS preferred) experience and abilities Expert Linux user; including daily containerized workflows with Docker Expert in infrastructure automation: Terraform, Ansible Power user level CI/CD pipeline and release workflow ownership Experience in automated testing: unit, integration, E2E; TDD where appropriate Expert level knowledge in and around web security fundamentals: auth, authorization, data protection, secure coding Legacy + modern codebase fluency; ability to work on incremental modernization Strong independent technical ownership and accountability We are always looking for the best candidates, so if you think you would be a good fit even if you don't meet 100% of the requirements, we would love to hear from you! How We Support Our Contractors An annualised rate of €145,000 + retention bonus scheme: Competitive contractor rate with a generous bonus paid every 6 months based on your time with us. Top-Notch Workstation: We provide a MacBook or Dell, branded merchandise, and everything you need for an optimal work environment. Global Co-Working Access: Work from a global network of co-working spaces to keep your work-life dynamic and flexible. Flexibility: Enjoy full flexibility in work location and hours, supporting a work-life balance tailored to your needs. Events and Gatherings: Participate in exciting events throughout the year, including team gatherings, cultural events, and other fun activities.