Senior Android Developer
About the Position
We are seeking a Senior Android Developer with deep expertise in Kotlin and modern Android development practices to build a new Android app from the ground up. You will own the architecture, implement core features, optimize performance and stability, and collaborate closely with product owners, iOS engineers, backend engineers, and designers. Working hours: 9:00 AM – 5:30 PM (UK Time)
About the Project
Join the development of a large-scale Android product for a leading UK digital bank, delivering innovative financial services including flexible payments. The team is building the Android app from scratch, implementing scalable architecture, clean UI with Jetpack Compose, and robust integration with backend APIs.
Responsibilities
- Develop and maintain the Android application from scratch using Kotlin and Jetpack Compose.
- Build scalable, modular architecture applying MVI and Clean Architecture principles with Dependency Injection (Hilt).
- Implement key features: real-time updates, push notifications, user authentication, offline caching, and secure local storage (Room, encrypted SharedPreferences).
- Integrate complex third-party SDKs and services.
- Collaborate with cross-functional teams, including React Native developers, primarily consuming APIs and feature structures from the React Native app.
- Write unit and UI tests (JUnit, Mockito, Espresso, Turbine), enforce high code quality, and work within CI/CD pipelines.
- Design and implement networking layer using Retrofit for REST APIs and Apollo GraphQL for flexible data fetching.
Requirements
- 5+ years of native Android development experience using Kotlin and Java.
- Proven experience building Android apps from scratch with modular, scalable architecture.
- Strong skills with Jetpack Compose, MVI, Hilt, and multi-module projects.
- Experience with Android SDK components and third-party SDK integration.
- Expertise in secure data storage techniques and managing authentication flows.
- Proficiency in writing automated tests and ensuring high-quality releases.
- Solid experience with Git, GitHub/GitLab workflows, and CI/CD pipelines.
- Familiarity with real-time asynchronous event handling using Kotlin Coroutines and Flow.
Nice to Have
- Understanding performance optimization on Android devices of varying capabilities.
- Experience working in Agile teams and coordinating with distributed cross-functional teams.
- Basic understanding of React Native and awareness of trade-offs between native and hybrid approaches.
- Understanding of mobile security best practices.
