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# Principal Android Engineer - Search and Recommendations Experience

- **Company:** Expedia, Inc.
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Android Software Development, Software Quality, Machine Learning, Model View ViewModel, Software Architecture, Information Technology, Jetpack Compose, Restful APIs, Android Ui
- **Published:** September 21, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/principal-android-engineer-search-and-recommendations-experience/47827091

## About the Role

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 KotlinAdvanced proficiency with Jetpack components/Jetpack Compose, Android UI/UX best practices, and performance optimizationDeep 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 teamsExpertise in cross-platform or multi-domain engineering, contributing to broad technical initiativesAccommodation requestsExpedia Group is committed to providing an inclusive and accessible recruiting

## Description

machine learning provides secure, differentiated, and personalized experiences that drive loyalty and traveler satisfactionThis 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 provide technical leadership for native search and discovery experiences, setting architectural direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform.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


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