Mobile Engineer III - Android

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 we 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.

Our Checkout Team enables one of the most important steps in a traveler's journey. Once they have chosen what they want, it's our job to make their booking smooth and easy, showing them the right information at the right time. We support complex travel products around the world, built for everyone from seasoned business travelers to people leaving on their first trip away from home.

As a Mobile Engineer I/II - Android on the Modern Checkout team, you'll work with global stakeholders to help millions of people set out on great adventures, visit home, and stay connected across their hometown and around the world.

Along with building great software, you’ll help elevate our team, teaching strong engineers from web, API, and native backgrounds about the finer points of Android development. You’ll help discover how we can integrate the latest AI tools, along with personal judgment and experience, to build software quickly and well.

• Design, build, and maintain Android application features and components that are reliable, scalable, and easy to maintain

• Implement well‑structured Kotlin code, including system design (LLD), API integration, and data modeling, following Android and Expedia Group engineering standards

• Collaborate with cross‑functional partners to translate product and UX requirements into performant Android experiences across multiple domains

• Diagnose, debug, and resolve complex issues in Android applications, improving quality, performance, and stability through testing and monitoring

• Contribute to code reviews, technical discussions, and documentation, promoting engineering best practices and consistent patterns across services and features

• Work with cutting‑edge AI tools to build software quickly to high quality standards, apply AI/ML to real‑world products, and safely integrate and operate AI/ML enabled solutions that improve outcomes for our travelers and business

• Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.

• 5+ years of relevant professional experience

• Proven experience developing and shipping Android applications using Kotlin in a production environment

• Experience designing and integrating with APIs, working with data modeling, and applying sound low‑level system design practices

• Demonstrated ownership of Android application features or components, including implementation, testing, and ongoing maintenance within a broader mobile product or service

• Experience working on Android applications at scale, including performance optimization, offline handling, and robust error management across complex user journeys

• Background in architecting modular Android applications that integrate with multiple backend systems and data sources, including clear contracts and versioning strategies

• Strong focus on operational excellence for mobile apps, including monitoring, logging, experimentation, and automated testing strategies (unit, UI, and integration)

• Experience with AI‑driven software development, familiarity with best practices, and clear points of view on AI and human contributions in this rapidly evolving landscape for good technical and product quality, good architecture, and fast development

• Experience leading technical design for Android features or subsystems, influencing architectural decisions, and mentoring others in modern Android and AI‑assisted development practices

The total cash range for this position in Seattle is $ to $. Employees in this role have the potential to increase…