Senior Software Engineer, Android

Our mission at Duolingo is to develop the best education in the world and make it universally available. But we've got more left to do - and that's where you come in!
Duolingo is the most popular language-learning application in the world, with over 500 million users and over half a billion exercises completed daily. Beyond our core learning product, we have also entered into literacy with Duolingo ABC and English proficiency testing with the Duolingo English Test .
We are passionate about educating our users, making fact-based decisions, and finding innovative solutions to complex problems. We offer meaningful work, limitless learning opportunities, and collaboration with world-class minds. Come brighten your life and over half a billion more!
As an Android software engineer, you will work on a specific project critical to Duolingo's needs. You will develop applications primarily in Kotlin and using the Android SDK. We need our engineers to be versatile, display leadership qualities, and be enthusiastic to take on new problems across the full stack as we continue to innovate.
Responsibilities

• Collaborate on software projects with product design and backend aspects
• Develop, release, and maintain native Android applications
• Lead individual project priorities and deliverables

Requirements:

• A Bachelor's degree in Computer Science or related technical field
• Strong competencies in data structures, algorithms, and software design
• Programming experience in Java/Kotlin
• Experience in mobile application development
• Ability to work from or relocate to Pittsburgh, PA

Exceptional candidates will have:

• Considerable programming experience using Android Studio and the Android SDK
• Knowledge of modern Android design patterns such as MVVM/MVI, reactive programming, dependency injection, modularization
• Familiarity with popular Android libraries such as Kotlin Coroutines/Flow, Dagger, Retrofit, Room, Espresso
• Experience designing clean and maintainable APIs
• Experience with multithreaded programming
• Experience writing unit tests and testable code

We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact your recruiter.
We aim to return to office, and as such are requiring all employees to be fully vaccinated against COVID-19 and have received any booster doses as recommended by the Centers for Disease Control and Prevention.
Take a peek at how we care for our employees' holistic well-being with our benefits here .