The opportunity
Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!
What you'll do
Lead architectural initiatives to fix the slowest parts of the app, from startup to critical learning flows
Own and evolve our performance tooling with tracing, benchmarking, and automated regression detection
Serve as a bridge between Client Platform and Product feature teams, helping: them understand and act on the performance data we provide
Foster a culture of engineering excellence around performance and mentor engineers of all experience levels
Worked on and shipped large scale Android applications
Experience identifying the root cause and resolving ANRs, memory leaks, dropped frames, and complex crashes
What they're looking for
- Strong Kotlin skills and deep familiarity with coroutines, Jetpack Compose, and modern architecture patterns
- Experience optimizing startup time, memory, and network usage for low-memory devices
- Strong problem-solving skills and a passion for tackling difficult challenges
- Expertise in Android tracing tooling like the AndroidX Tracing Library and Perfetto
