Senior Android Developer

Penn Interactive

full-time

Posted on: 9/24/2025

Origin: • 🇨🇦 Canada

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Senior

AndroidApolloDaggerGraphQLJUnitKotlinMockito

About the role

Work with the product team to design, architect, and ship customer experience features to our applications.
Implement polished user interfaces with the help of the design team.
Improve code through refactoring and applying modern design patterns.
Work with other engineers through technical collaboration, discussion, and code review.
Collaborate with the ESPN development team in supporting their initiatives and our own objectives.
Solve difficult problems related to large data sets and responsive UIs.
Help QA to automate testing and continuous integration.
Keep up to date with the latest advances in Android development.
Work with high volumes of fluid and real time data: efficiently retrieve, transform, and merchandise data to users.
Collaborate with design, product, frontend, and backend teams to define and deliver a first-class sports betting experience.
Other duties as required.

4+ years experience with Kotlin (our apps are 100% Kotlin)
5+ years experience in commercial Native Android development
Experience writing unit tests (jUnit, Mockito, Robolectric)
Experience developing pixel-perfect user interfaces.
Experience creating custom UI elements and creating a rich, interactive UX
Experience working with JetPack Components.
Experience with dependency injection frameworks (Koin, Dagger, Hilt)
Solid understanding of modern software architectures (MVVM)
Knowledge of mobile network communication (okHttp, retrofit, Apollo GraphQL)
Experience integrating APIs and back-end services with mobile applications.
Highly proficient with profiling, troubleshooting and optimizing app performance
A demonstrated ability in delivering clean, organized, testable, and highly performant code.
Experience working with Git.
Experience working with large native code bases with significant complexity.
Solid knowledge of object-oriented design, software development principles, and design patterns.
Solid knowledge of concurrency best practices and pitfalls.
Knowledge of maintaining SDKs for external parties.
A degree in Computer Science, Engineering, and/or equivalent experience.
A passion for sports and/or gaming is considered an asset.
Desired Skills: Git, AndroidX, Android Architecture Components, Kotlin, Coroutines, Dependency Injections(Koin), JUnit, Robolectric, MVVM, retrofit2, OkHttp, GraphQL