IOS Mobile Engineer III

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.

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 Mobile Engineer III role is part of the SPX
- Run The Business team which sits within our Technology division. The Supply Partner Experience (SPX) Run The Business team supports the design and experience of the reservations, conversations, and reviews pages in Partner Central, helping partners manage bookings, communicate with travelers, and respond to feedback more efficiently.

You will use your mobile engineering expertise to build and continuously improve intuitive, reliable experiences that make it easier for our lodging partners to run their business on the go.

• Design, build, and maintain iOS applications and features, ensuring high performance, quality, and responsiveness to user needs.
• Implement and evolve clean, scalable architectures for iOS, including system design, API integration patterns, and data modeling aligned with Expedia Group standards.
• Collaborate with cross-functional partners (product, design, backend, data) to translate business and customer requirements into robust, user‑centric mobile solutions.
• Diagnose and resolve complex defects and performance bottlenecks, improving reliability, observability, and maintainability across multiple iOS components or services.
• Apply familiarity with AI‑driven systems, tools, or workflows and apply AI/ML concepts to real‑world products, including safely integrating and operating AI/ML‑enabled solutions that improve outcomes in mobile experiences.
• Contribute to shared mobile frameworks, libraries, and best practices to enable reuse and fungibility across multiple iOS apps, domains, and feature areas.

• Bachelor’s degree in Computer Science or a related technical field; or Equivalent related professional experience.
• 5+ years of relevant professional experience.
• Professional experience developing and shipping iOS applications at scale, using Swift and/or Objective‑C within modern mobile architectures.
• Proven ownership of multiple features or services within an iOS application or mobile domain, including responsibility for design, implementation, testing, and operational support.
• Demonstrated competence in system design for mobile (including low-level design), API consumption and contract definition, and data modeling for offline/online scenarios on iOS.

• Experience architecting and evolving complex iOS applications or modules that serve large user bases, with a track record of improving performance, reliability, and code quality.
• Background in designing and reviewing mobile system design (LLD), API design, and data models that support scalable, secure, and observable integrations with backend and third‑party services.
• Strong focus on operational excellence, including metrics, logging, monitoring, experimentation, and data‑driven decision making to guide mobile feature development and optimization.
• Safely integrates and operates AI/ML‑enabled solutions that improve outcomes in native iOS experiences, such as personalized content, recommendations, or intelligent assistance features.
• Han…