Principal iOS Engineer - Search and Recommendations Experience

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.

Introduction to Team: Our Technology Team partners with teams across Expedia Group to create 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 that drive loyalty and traveler satisfaction.

This Principal iOS Engineer sits within the Search and Recommendations Experience team which owns the end-to-end search and recommendations experience, including search entry, results, maps, filters, and recommendations across multiple lines of business such as lodging, cars, activities, flights and packages. In this role, you will provide technical leadership for native search and discovery experiences, setting architectural direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform.

• Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group's product suite.
• Architect and implement robust, scalable system and API designs, including effective data modeling to support complex business requirements.
• Drive cross-functional collaboration to define, develop, and ship impactful features, ensuring alignment with organizational goals and technical strategy.
• Champion best practices in software engineering, testability, and maintainability through code reviews and mentoring.
• Safely integrate and operate AI/ML enabled solutions to enhance user experience and improve operational outcomes.
• Troubleshoot, optimize, and resolve complex technical issues, contributing to the continuous improvement of services and domain capabilities.

• Bachelor's degree in Computer Science or a related technical field; or equivalent related professional experience.
• 12+ years of relevant professional experience.
• Demonstrated experience owning the full lifecycle of iOS services or features within a multi-service or domain environment.
• Proficiency in Swift, Objective-C, and iOS frameworks, with a strong understanding of system and API design principles.
• Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.

• Experience architecting scalable, complex, modular, and maintainable iOS mobile architectures, leveraging common design patterns such as MVVM or VIPER.
• Advanced proficiency in SwiftUI; skilled in multi-threading, concurrency, and performance optimization.
• Prior experience in the search domain or travel industry, such as building or scaling search, discovery in consumer mobile apps.
• Experience establishing technical strategy, best practices, and operational excellence for organizational mobile platforms.
• Advanced knowledge of integrating AI/ML capabilities into mobile products to enhance functionality and user engagement.
• Demonstrated experience collaborating within large, globally dispersed development teams.
• Expertise in cross-platform or multi-domain engineering, contributing to broad technical initiatives.

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 . For more information, visit . 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 official domain and the official careers site is