Principal Android Engineer We are looking for a Principal Android Engineer to lead development of a high-quality, customer-facing mobile app. You will guide technical strategy, drive architectural decisions, and mentor engineers while collaborating with Product, iOS, and QA partners in an agile environment. This position requires on-site presence at least once per week. 12 Month Initial Contract, Rolling, strong daily rate available. Required Experience 10+ years of Android development, including 3+ years in a technical leadership role Expert in Kotlin, Android SDK, Jetpack Compose, Android Studio Strong understanding of Android internals, performance optimization, and scalable architectures Proven experience architecting, launching, and scaling apps in the Google Play Store Strong knowledge of design patterns, clean architecture, and secure networking (REST/GraphQL) Advanced testing practices (unit, integration, end-to-end) and CI/CD automation Skilled in Git, agile methodologies, troubleshooting, and technical decision-making Excellent communication skills with the ability to simplify complex concepts Ability to align technical direction with business priorities Key Responsibilities Define and lead Android technical strategy and architectural standards Champion performance, scalability, maintainability, and code quality Introduce modern Android tooling and engineering best practices Mentor engineers and influence engineering practices across teams Deliver robust, secure, and intuitive mobile features at pace Ensure operational excellence, observability, and reliability in production Reduce technical debt and continually improve developer workflows Resolve complex production issues and implement preventative improvements Availability to start at short notice preferred Additional Information Immediate interviews with prompt start date available. Applicants must be eligible to work full-time in Ireland without restrictions. For more information, please contact Scott Hool in confidence. Reperio Human Capital acts as an Employment Agency and an Employment Business. Skills: Principal Android Engineer Contract Mobile