Senior Android Engineer

Stack

Responsibilities

• ▹Develop and maintain a high-quality Android application focused on performance, UI, and UX
• ▹Take ownership of development processes, ensuring clean, maintainable, scalable code
• ▹Work with cross-functional teams to design, develop, and launch new features
• ▹Implement CI/CD pipelines and deployment best practices
• ▹Conduct code reviews and enforce coding standards
• ▹Profile and optimize app performance (memory, jank, startup, battery, APK/AAB size)
• ▹Stay up to date with the latest Android development trends

Requirements

• ▹5+ years of professional Android development experience
• ▹Experience with B2C mobile apps built on subscription business models
• ▹Expert proficiency in Kotlin (coroutines, Flow, sealed classes, generics, extension functions)
• ▹Strong command of Google Play Billing Library v7+ and subscription lifecycle (purchase flows, entitlement management, RTDN, server-side validation)
• ▹Deep understanding of Jetpack Compose and the Android View system, including interoperability and state management
• ▹Strong grasp of modern Android architecture: MVVM/MVI, Clean Architecture, unidirectional data flow, modularization
• ▹Proficiency with Jetpack libraries (ViewModel, Navigation, Room, WorkManager, DataStore) and dependency injection (Hilt/Dagger)
• ▹Experience with CI/CD (GitHub Actions, Bitrise, or GitLab CI), Gitflow, and Play Console distribution
• ▹Automated testing experience: JUnit, Espresso, Compose UI testing, Turbine, MockK
• ▹Strong debugging and profiling skills with Android Studio Profiler, LeakCanary, and Baseline Profiles
• ▹Experience integrating AI-driven features and/or AI-assisted development workflows
• ▹Located within approximately ±4 hours of CET

What we offer

• ▹Remote work environment
• ▹Unlimited PTO
• ▹Paid national holidays
• ▹Company-provided MacBook

About the company

Ruby Labs is a tech company that creates and operates consumer products across the health, education, and entertainment industries.