Principal Android Engineer - Search & AI-Driven Discovery

Expedia; Greater London; Hybrid; GBP 110,000 - 170,000; Full time

Job summary

Expedia Group is seeking a Principal Android Engineer to lead the end-to-end Android mobile experience across multiple lines of business, including lodging, cars, activities, flights, and packages. You will set architectural direction, mentor engineers, and drive AI-enabled capabilities across the mobile platform.

The role requires deep Kotlin expertise, Jetpack Compose mastery, and strong API design, with a focus on scalable, high-performance apps that delight travelers and partners alike.

Qualifications

• Bachelor's degree in Computer Science or a related field.
• 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, tools, or workflows and applying AI/ML concepts to real world products.

Responsibilities

• 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.

Skills

Kotlin

Android Architecture

Jetpack Compose

AI/ML concepts

Leadership

Education

Bachelor's degree in Computer Science or related field

Job description

Expedia Group is seeking a Principal Android Engineer to lead the end-to-end Android mobile experience across multiple lines of business, including lodging, cars, activities, flights, and packages. You will set architectural direction, mentor engineers, and drive AI-enabled capabilities across the mobile platform.

The role requires deep Kotlin expertise, Jetpack Compose mastery, and strong API design, with a focus on scalable, high-performance apps that delight travelers and partners alike.