• Build and maintain core Android infrastructure, app architecture, developer frameworks, and release tooling that empower Android engineers. • Define, advocate, and implement Android best practices to ensure consistency and simplicity in a high-commit volume codebase. • Leverage Kotlin, Java, Jetpack Compose, Dagger/Hilt, and GraphQL to deliver scalable, maintainable, and modern solutions. • Develop code with a strong focus on testability, maintainability, and quality, writing automated tests using JVM Unit and Espresso. • Continuously modernize and optimize the Android codebase and take on large-scale foundational architecture and frameworks. • Build operationalized release and production tooling that accelerate innovation and enhance developer experience. • Design and implement cross-platform UI architecture and server-driven UI frameworks powering Android, iOS, TV, and Web. • Deliver frameworks and libraries that simplify feature-configuration-based UI development and support product engineers in production. • Collaborate broadly across client, server, foundational, and product engineers to improve development velocity for 100+ engineers and millions of users.