Principal Android Engineer - Search and Recommendations Experience

Expedia, Inc.; Greater London; On-site; GBP 110,000 - 160,000; Full time

Job summary

Expedia Group is seeking a Principal Android Engineer to lead the end-to-end Android mobile experience across search, recommendations, and travel services. You will set architectural direction, mentor engineers, and drive AI-enabled capabilities across the mobile platform.

You will collaborate with product, design, and engineering stakeholders to deliver scalable, high-performance mobile features and ensure maintainable solutions across Expedia Group's travel platforms.

Qualifications

• Bachelor's degree in Computer Science or a related technical field, or equivalent 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 mobile initiatives.
• Familiarity with AI-driven systems and applying AI/ML concepts to real world products.

Responsibilities

• Architect, design, and deliver advanced Android mobile solutions across Expedia Group's 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.

Skills

Android architecture leadership

Kotlin

Jetpack Compose

MVVM/MVI/MVP

AI/ML integration

Technical leadership

Cross-team collaboration

Education

Bachelor's degree in Computer Science or related field

Tools

Android Studio

RESTful APIs

CI/CD tooling

Job 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 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 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 requestsExpedia Group is committed to providing an inclusive and accessible recruiting

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.

Introduction to Team

Our Technology Team partners with teams across Expedia Group to create innovative products, services, and tools to deliver high-quality experiences for travelers, partners, and our employees. A singular technology platform powered by data and