Android Developer

Role :- Android Developer Type:- Permanent or Contract Location:- London, UK (Hybrid)Work Authorization: Valid UK Work Permit Job DescriptionExpert-level proficiency in Kotlin and strong Android SDK fundamentals.Hands-on experience with Jetpack Compose and interest in developing new features using Compose.Proven experience building, scaling, and maintaining consumer-facing Android applications.Experience working in large, modular Android codebases.Strong knowledge of RxJava or equivalent reactive programming frameworks.Strong testing mindset with experience in:JUnitEspressoUnit TestingScreenshot/UI TestingProduct-focused development approach with experience in experimentation, analytics, and iteration.Strong expertise in Android performance profiling and optimisation.Solid understanding of Object-Oriented Programming and design patterns.Comfortable leveraging AI-powered development tools such as Claude Code.Excellent collaboration and communication skills.Experience working with monetisation, subscriptions, credits systems, and in-app purchase flows.Strong computer science fundamentals including algorithms, data structures, concurrency, and multithreading.Good to HaveComputer Science or related technical degree.CI/CD experience (TeamCity or similar).Experience with Appyx, RIBs, MVICore, or similar architectures.Kotlin Coroutines and Flow.gRPC, Protobuf, or schema-driven API tools.Socket-based networking and binary protocols.Gradle build tooling at scale.Experience managing multiple app flavours from a single codebase.A/B testing frameworks and feature flagging.Analytics, remote monitoring, and performance metrics.Key ResponsibilitiesDesign, develop, and deliver Android features for millions of users.Own and drive technical and product initiatives from concept through production support.Build modern Android UI using Jetpack Compose and contribute to migration from XML-based UI.Collaborate closely with Backend, iOS, QA, Product, and Design teams.Work with Protobuf/gRPC-based APIs and own the client-side implementation.Develop and maintain automated test coverage using JUnit, Espresso, and visual regression testing.Ensure application quality through thorough end-to-end testing across supported devices.Run A/B tests, evaluate results, and optimise user experience.Participate in code reviews and mentor team members.Contribute to incident management, root cause analysis, and post-mortem activities.Build and enhance monetisation features including subscription and credit-based systems.Leverage AI tools to accelerate development, experimentation, and delivery.