Mobile Engineer III, iOS in City of Westminster

At Expedia Group, we help travelers explore the world, one journey at a time.

As a global travel company powered by passionate people, trusted partnerships, and leading technology, we connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business.

Here, you'll do meaningful work that helps millions of people discover, book, and experience travel with more ease, confidence, and joy.

Our five Behaviors-Traveler First, Think Big, Operate with Excellence, Ownership Mindset, and Succeed Together-help foster a supportive environment where people can grow their careers and have the flexibility, benefits, and support to do their best work.

Join us and build for travelers everywhere.

Role Summary

A high-performing individual contributor on the Expedia Group Design System (EGDS) team who applies i OS engineering knowledge to improve existing systems, advocates for the value engineering adds to the design lifecycle, mentors more junior engineers, and leads complex, well-defined projects that deliver high-quality UI patterns and experiences for travelers and suppliers across Expedia Group.

Approaches problem-solving AI-first, using tools like Claude Code to accelerate delivery, and helps raise the bar for AI-assisted development across the team.

Experience

• Bachelor's or Master's degree, or equivalent experience. Technical degree preferred.
• 5+ years with a Bachelor's degree
• 3+ years with a Master's degree
• Technical Prerequisites
• Strong proficiency with Swift, Swift UI, and Xcode.
• Proficient with AI-assisted development tools (e. g., Claude Code) as a core, daily part of the engineering workflow.
• Maintained/ran multiple projects/products in production environments (bug fixing, troubleshooting, monitoring, etc.).
• Experience writing unit tests, creating testable code, and debugging issues using monitoring tools.
• Proficiency with version control systems, such as Git.
• Experience using, and ideally contributing, to design systems
• Functional / Technical Skills
• Leads design/engineering reviews and enforces accessibility and performance budgets within the i OS design system.
• Implements sophisticated UI interactions, animations, and transitions, with a strong understanding of layout and screen flow.
• Selects among available technology to implement and solve for need.
• Leads cross-team discussions to align on outcomes when projects span team boundaries.
• Owns high-level design (HLD) for multi-module i OS systems.
• Selects and applies the appropriate i OS design pattern (e. g., MVC, MVVM, MVP) across multi-module systems, weighing tradeoffs.
• Tests and monitors code at the project level.
• Builds tracing across modules and leads root-cause debugging efforts.
• Tests, debugs, and fixes issues within established SLAs.
• Designs easily testable and observable software.
• Monitors, instruments, and troubleshoots performance of code (frame rate, memory debugger, performance metrics, battery usage optimization).
• Leads roadmap tradeoffs across a feature set, weighing sequencing and risk against business need.
• Identifies business problems at the project level and provides solutions.
• Designs how applications integrate with the underlying i OS platform, including offline-ready flows and caching.
• Role Expectations
• Advocates for the value engineering can add to the design lifecycle.
• Collaborates with UX designers, engineers, and product managers across Expedia Group to identify and develop solutions for new and improved user experiences and interactions.
• Leads team workshops and coaches engineers on design and delivery practices.
• Approaches problem-solving AI-first, using tools such as Claude Code to accelerate development, and shares best practices to help others on the team get the most out of AI tooling.
• Continually seeks new technical skills in an engineering area.
• Shares new skills and knowledge with the team to increase effectiveness.
• Demonstrates knowledge of advanced and relevant i OS technology.
• Is comfortable working with several forms of Apple mobile technologies (different form factors, widgets, Apple Watch).
• Develops and tests complex or non-routine software applications and related programs and procedures to ensure they meet design requirements.
• Effectively applies knowledge of software design principles, data structures, and/or design patterns and computer science fundamentals to write code that is clean, maintainable, optimized, modular, and with good naming conventions.
• Effectively applies knowledge of API/schema design principles to solve data requirements for i OS experiences.
• Effectively uses an understanding of software frameworks and how to leverage them to write simpler code.
• Leads/clarifies code evolution in code reviews.
• Has a track record of successful collaboration with designers and engineers to create accessible, user‑centric solutions.
• Develops prototypes to influence strategy, not just execution, and advises on technical limitations.
• Identifies opportunities to increase efficiency across the feature set or module.
• Owns an i OS-centric approach to analyzing issues, ensuring all components (structure, people, process, and technology) are identified and accounted for.
• Identifies areas of inefficiency in code or systems operation and offers suggestions for improvements.
• Is passionate about i OS technologies and best practices.
• Compiles and reports on major operational or technical initiatives (e. g., Root Cause Analyses) to larger groups, whether via written or oral means.
• Accommodation requests

Expedia Group is committed to providing an inclusive and accessible recruiting experience.

If you need an accommodation or adjustment due to a disability during the application or recruiting process, please submit a request at https://expedia. service-now. com/askeg?id=job_accommodation.

About Expedia Group

Expedia Group includes three flagship consumer brands - Expedia, Hotels. com, and Vrbo - along with a leading B2B travel business and travel advertising offerings.

Across our brands and business, we help travelers explore the world with confidence and ease.

Important notice

Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams.

Never share sensitive personal information unless you are confident of the recipient.

Expedia Group does not extend job offers via email or messaging tools to individuals with whom we have not made prior contact.

Our email domain is @expediagroup. com.

The official place to find and apply for roles is https://careers. expediagroup. com/jobs/.

Equal Opportunity

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.

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