Principal Android Engineer - Search and Recommendations Experience in London

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.

Introduction to Team The Product Team creates high‑quality end‑to‑end experiences for travelers, partners, and Expedia Group. Our focus on customer‑centric innovation enables us to develop products that build loyalty and repeat business. We partner closely with teams across Expedia Group to drive growth and achieve results for our customers and the company.

This Principal Android Engineer sits within the Search and Recommendations Experience team which owns the end‑to‑end search and recommendations experience, including search entry, results, maps, filters, and recommendations across multiple lines of business such as lodging, cars, activities, flights and packages.

In this role, you will:

• Architect, design, and deliver advanced Android mobile solutions, ensuring scalability, performance, and maintainability across Expedia Group’s travel platforms.
• Lead technical direction for multi‑service and cross‑domain initiatives, influencing architectural decisions and setting coding standards.
• Develop system designs, low‑level designs (LLD), robust APIs, and data models that support seamless integration with internal and external services.
• Mentor and guide mobile engineers across teams, fostering technical excellence, code quality, and knowledge sharing.
• Safely integrate and operate AI/ML‑enabled solutions that improve mobile user experiences and business outcomes.
• Collaborate with product, design, and engineering stakeholders to deliver innovative mobile features and drive technical strategy across the organization.

Minimum Qualifications:

• Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.
• 12+ years of relevant professional experience.
• Proven expertise in designing and delivering complex Android mobile applications at scale, including system and API design.
• Extensive experience leading architecture and technical direction for multi‑service, cross‑domain, or organizational mobile initiatives.
• Familiarity with AI‑driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Preferred Qualifications:

• Strong proficiency in Kotlin.
• Advanced proficiency with Jetpack components/Jetpack Compose, Android UI/UX best practices, and performance optimization.
• Deep understanding of Android app architecture patterns (e.g., MVVM, MVI, MVP).
• Prior experience in the search domain or travel industry, such as building or scaling search, discovery in consumer mobile apps.
• Experience establishing technical strategy, best practices, and operational excellence for organizational mobile platforms.
• Advanced knowledge of integrating AI/ML capabilities into mobile products to enhance functionality and user engagement.
• Demonstrated experience collaborating within large, globally dispersed development teams.
• Expertise in cross‑platform or multi‑domain engineering, contributing to broad technical initiatives.

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. 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.