Sr. iOS Mobile Engineer

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.

• Design, build, and maintain high‑quality iOS applications, focusing on robust system design (including low‑level design), API integration, and data modeling that support resilient, scalable mobile experiences.
• Implement and review complex Swift code, applying strong engineering fundamentals, testing practices, and performance optimization to deliver reliable, user‑centric features on iOS devices.
• Mentor and guide junior developers, fostering a culture of continuous learning and skill development within the team.
• Collaborate with cross‑functional teams to define mobile architecture, integrate backend services and third‑party SDKs, and ensure secure, performant, and maintainable end‑to‑end solutions.
• Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including personalization, recommendations, or automation features within the iOS application experience.
• Apply familiarity with AI‑driven systems, tools, or workflows and AI/ML concepts to enhance mobile product capabilities, developer productivity, and experimentation on iOS.
• Contribute to technical design reviews, code reviews, and continuous improvement initiatives, ensuring engineering best practices and fungibility of solutions across multiple domains and services.

• Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience in professional software development.
• 8+ years of hands‑on experience developing and shipping production‑grade iOS applications using Swift and Swift UI, including end‑to‑end feature ownership from design through release and support.
• Proven experience owning components or services within a mobile application ecosystem, including integrating RESTful APIs, managing data models, and contributing to system and API design.
• Strong proficiency in core software engineering fundamentals, including object‑oriented design, low‑level design, data structures, algorithms, unit/integration testing, and debugging on iOS.
• Experience working within collaborative engineering teams, using modern tooling (such as version control, CI/CD pipelines, and monitoring) to deliver maintainable, scalable mobile solutions.
  

• Demonstrated experience architecting and evolving complex iOS applications at scale, including modularization, API design for mobile‑backend interactions, and performance and reliability optimization.
• Experience leading or significantly contributing to the technical design of new iOS features or subsystems, including data modeling and integration patterns that can be reused across multiple domains or products.
• Strong track record of operational excellence for mobile applications, such as setting up observability, diagnostics, and automated testing strategies to ensure high availability and quality in production.
• Familiarity with AI‑driven systems, tools, or workflows and applying AI/ML concepts to real world products, including safely integrating and operating AI/ML‑enabled solutions that improve user experience or business outcomes on iOS.
• Hands‑on experience leveraging on‑device or service‑based ML/AI capabilities (for example, personalization, ranking, or intelligent automation) in mobile applications, including collaborating with data/ML teams to design, integrate, and iterate on these features.

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®, Hotels.com®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. © 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50

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 email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com/jobs.