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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Android Engineer - Retail (SS) - **Company:** Sainsbury’s Group - **Location:** London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Multitier Architecture, Application Programming Interfaces (APIs), Artificial Intelligence, Android Software Development, Cloud Engineering, Software Quality, Continuous Integration, Distributed Systems, Design of User Interfaces, Mobile Application Software, Junit, Model View ViewModel, Performance Tuning, Mockito, Software Engineering, User Interface Testing, Technical Debt, Kotlin, Modularization, Jetpack Compose, Asynchronous Programming, Multiplatform - **Published:** July 22, 2026 - **Apply:** https://uk.indeed.com/viewjob?jk=b7b11d7c0ece2003 ## About the Role * Extensive commercial experience developing complex Android applications using Kotlin, including advanced use of Coroutines, Flows, Retrofit, Hilt, Room, Coil, Navigation Components, and Jetpack libraries * Experience contributing to or leading adoption of Kotlin Multiplatform (KMP) solutions across Android platforms * Expert understanding of modern Android architecture patterns, including MVVM, Clean Architecture, modularisation, and scalable application design * Proven track record of leading the end-to-end delivery of mobile products across the full software development lifecycle * Strong experience designing technical solutions and influencing architectural decisions within large-scale engineering environments * Deep understanding of software engineering fundamentals, including testing, security, performance optimisation, observability, and CI/CD * Advanced experience with automated testing frameworks including JUnit, Mockito, Turbine, and UI testing approaches * Experience mentoring engineers, providing technical leadership, and driving engineering best practices within teams * Ability to influence technical roadmaps, balancing customer needs, business goals, and long-term platform sustainability * Strong stakeholder management and communication skills, with the ability to explain complex technical concepts to both technical and non-technical audiences * Experience collaborating effectively within cross-functional and cross-platform engineering teams * Demonstrated ability to identify and resolve complex technical challenges while maintaining a focus on quality, scalability, and delivery outcomes Desirable Criteria * Strong experience with Jetpack Compose and modern declarative UI development * Knowledge of backend technologies, APIs, cloud-native architectures, and distributed systems * Experience building and maintaining shared mobile platforms, SDKs, or reusable engineering capabilities * Experience working with AI, ML, or intelligent product features * Active contribution to engineering communities through mentoring, conference speaking, blogging, or open-source projects ## Description * Lead the design, development, and evolution of large-scale Android applications using modern Kotlin-based technologies * Own complex technical deliveries, driving solutions from discovery and architecture through to implementation and production support * Define and influence mobile architecture, engineering standards, and technical strategy across multiple products and teams * Mentor and support engineers, fostering technical growth and a culture of continuous improvement * Collaborate with Product Managers, Designers, Architects, and Engineers to translate business objectives into scalable technical solutions * Drive engineering excellence through modern software practices, automation, code quality, testing, observability, and CI/CD * Contribute to platform-level initiatives, shared libraries, and cross-platform capabilities, including Kotlin Multiplatform * Identify and address technical debt, performance bottlenecks, scalability challenges, and security concerns * Champion customer experience, accessibility, reliability, and maintainability in all engineering decisions * Actively contribute to the wider engineering community through knowledge sharing, technical leadership, and innovation, * You are recognised as a senior technical leader within your team and broader engineering community * Teams adopt architecture and engineering practices you've helped define * Engineers grow through your mentoring and technical guidance * Mobile applications remain performant, resilient, secure, and scalable for millions of customers * You help shape the future direction of Android engineering within Sainsbury's Tech ## Related Videos - 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