Mobile Engineer III, iOS

Expedia•Seattle, WA

10h

About The Position

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. Intro to the 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. As a Mobile Engineer III, iOS, working on Expedia’s critical production checkout applications, your mission will be to ensure Expedia Checkout is always fast, available, scalable, and engineered to withstand unparalleled demand. You will be in the thick of solving the [often unexpected] problems of systems at scale in a way most engineers never experience. You will have strong analytical and troubleshooting skills, proficiency in coding and systems design, solid interpersonal skills, and a desire to tackle the complex problems of scale. You are a collaborative and creative individual, and you thrive in a dynamic and agile environment. You adapt to new technologies and enjoy working on complex problems. Every day, we at Expedia get to innovate on web applications that millions of travelers use to plan, book, and experience trips they will remember forever.

Requirements

Bachelor’s degree in Computer Science, Software Engineering, or 5 years of equivalent practical experience
Professional experience shipping native iOS applications with ownership from design through production
Strong iOS architecture, low‑level design, API integration, and data modeling experience
Proficiency with iOS tools, frameworks, testing, observability, and operational best practices
Experience collaborating in cross‑functional, multi‑domain teams

Nice To Haves

Experience designing and scaling complex iOS architectures (modularization, performance, offline support)
Proven delivery of high‑impact iOS features across multiple domains
Strong focus on operational excellence (instrumentation, monitoring, alerting, incident resolution)
Experience integrating AI/ML‑enabled capabilities into mobile apps securely and responsibly
Familiarity with AI‑driven development tools and applying AI/ML concepts to improve product quality and developer efficiency

Responsibilities

Design, build, and maintain native iOS applications that are secure, performant, and resilient using modern iOS frameworks and best practices
Translate product and experience requirements into clear technical designs (LLD, API design, data models)
Collaborate cross‑functionally with backend, product, design, and quality teams to deliver end‑to‑end customer journeys
Write clean, testable, and observable code; contribute to automated testing, monitoring, and code reviews
Diagnose and resolve complex production issues, improving application reliability and performance
Safely integrate and operate AI/ML‑enabled solutions while maintaining privacy and security standards