Senior Android Engineer, App Builds

Duolingo is on a mission to develop the best education in the world and make it universally available. As a Senior Android Engineer on the App Builds team, you will be responsible for optimizing build processes and driving modernization efforts for Android development, while mentoring engineers and fostering a culture of excellence.

Responsibilities:

• Drive the modernization of our CI build and release pipelines with the migration to new Github Action workflows
• Develop tooling and automation to accelerate the modularization of our Kotlin codebase
• Design and evolve Android test infrastructure to improve developer velocity and test reliability
• Proactively identify and implement improvements to our build performance, reliability, and developer workflows as the Android ecosystem evolves
• Foster a culture of engineering excellence and mentor engineers of all experience levels

Requirements:

• 6+ years of Android software engineering experience, and 1-2+ years developing scalable production software
• Experience supporting either Gradle-based projects or large Android builds
• Proven ability to drive large-scale technical initiatives across multiple teams
• Proficiency in Android development using standard tools and frameworks
• Expertise working with CI/CD platforms like Github Actions
• Experience with Gradle principles e.g., caching and task avoidance