Mobile Engineer III, iOS

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.

Mobile Engineer III, iOS

Introduction to the Team

Expedia Technology teams partner our Product teams to create innovative products, services, and tools that deliver high-quality experiences for travelers, partners, and employees. Our unified technology platform, powered by data and machine learning, enables secure, personalized, and differentiated experiences that drive loyalty and traveler satisfaction.

The Expedia Group Cars team owns the end-to-end car rental shopping and booking. We build scalable, high-performance systems that enable travelers to plan, search, compare, and book rental cars seamlessly across web and native app platforms.

We are looking for native iOS engineers who are excited to contribute to the growth and evolution of the Cars business by delivering impactful features and services that delight customers and partners. You will work in a collaborative, fast-paced environment where ownership, technical excellence, and innovation are highly valued.

Team members in Cars are accountable for delivery and outcomes in a high-impact environment. We embody the “One Team” philosophy and apply Agile, Lean, Continuous Delivery, and data-driven principles across engineering and operations.

In This Role, You Will:

• Design, develop, and maintain iOS applications using Swift and related Apple frameworks, ensuring performant, reliable, and maintainable mobile experiences.
• Contribute to system design, including API contracts, low-level design, and data modeling for mobile features that integrate with backend services and shared platforms.
• Implement high-quality, testable code by applying engineering best practices in code structure, unit testing, integration testing, and code reviews within an agile development environment.
• Collaborate with cross-functional teams across multiple product areas or domains to deliver reusable mobile components and services that can be leveraged across Expedia Group brands.
• Diagnose, debug, and resolve complex issues in production and pre-production environments, contributing to robust monitoring, logging, and operational excellence for iOS applications.
• Safely integrate and operate AI/ML‑enabled or AI‑assisted solutions within mobile workflows, including familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience in software development.
• Professional experience (typically 2–5 years) building and shipping native iOS applications using Swift, Xcode, and core iOS frameworks.
• Hands-on experience owning features or services end-to-end within a mobile application, including design, implementation, testing, deployment, and production support.
• Solid understanding of mobile system design fundamentals, including API design, data modeling, asynchronous programming, and performance optimization on iOS.
• Demonstrated ability to work in a collaborative engineering environment, participating in code reviews, using source control, and following established engineering and operational practices.

Preferred Qualifications:

• Experience designing and evolving iOS application architectures (such as MVVM, VIPER, or similar patterns) and contributing to shared mobile platforms or libraries used across multiple teams or product areas.
• Background working with large-scale consumer mobile applications, including performance tuning, offline capabilities, analytics integration, and experimentation to drive data-informed improvements.
• Proven contribution to system and API design in partnership with backend and platform teams, including defining contracts, data schemas, and integration patterns for mobile clients.
• Experience safely integrating and operating AI/ML‑enabled solutions on mobile (for example, AI-assisted search, recommendations, personalization, or content generation), with familiarity using AI-driven systems, tools, or workflows in product development.
• Exposure to or experience with mobile CI/CD pipelines, automated testing strategies, monitoring, and alerting for iOS apps, with a focus on maintaining high reliability and operational excellence.

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.