Senior Software Engineer - Mobile (Android)

The Senior Android Developer is a hands-on senior contributor to Esyasoft's Android app, a key surface for our clients and end-users globally. The role combines high-quality individual delivery with active mentorship of mid-level Android engineers and contribution to platform direction. The role owns:

• Hands-on delivery of features and improvements to Esyasoft's Android app
• Quality, performance and reliability of Android codebase
• Code review and mentoring of less senior Android engineers (as required)
• Contribution to architectural decisions on the Android codebase Key Responsibilities & Areas of Ownership A. Android Development
• Maintain and develop high-quality Android code aligned to agreed technical requirements
• Work closely with the Lead Mobile Apps Developer and wider tech team to refine requirements and create technical documentation
• Provide hands-on technical knowledge in Android architecture, design and ongoing improvement B. Architecture, Patterns and Practice
• Develop using modern Android architecture (MVI, Jetpack Compose)
• Champion SOLID principles, clean architecture and testable code
• Contribute to architectural decisions across the Android codebase C. Quality, Code Review and Releases
• Write well-tested code (unit tests as standard); partner with the QA team on integration and UI test coverage where relevant
• Participate in code review with rigor
• Support release management — staged roll outs, monitoring, post-release follow-through D. Cross-Functional Collaboration and Mentoring
• Communicate clearly with non-technical stakeholders including product and design — explain trade offs without losing them
• Work with backend and data teams to ensure any blockers or issues with APIs or data are resolved E. Security, Data Privacy and Compliance
• Adhere to Esyasoft's data protection and security policies — Cyber Essentials, ISO 27001 and PCI-DSS where relevant
• Embed secure-by-default patterns in Android-specific code — secure storage, certificate pinning, secrets management F. Learning and Engineering Growth
• Keep up with the evolving Android ecosystem — new APIs, library updates, platform changes
• Bring practical innovation into the team — prove value first, then adopt Requirements Key Skills, Attributes and Experience Required Skills & Experience
• Demonstrable senior-level commercial experience as a native Android developer
• Strong commercial experience with Kotlin (and Java where existing) — MVVM, Jetpack components and the modern Android development stack
• Extensive experience of RESTful API and third-party integration
• Experience of TDD, BDD or other code testing practices; strong understanding of data structures and algorithms Desirable Skills & Experience
• Commercial experience with Google Maps or other mapping platforms; e-commerce or payment gateways
• Experience with Kotlin Coroutines, Flows and Jetpack Compose
• Exposure to automated UI testing (Espresso) and Android Auto or wearables Key Attributes
• Curious — actively keeps up with Android evolution; willing to experiment responsibly
• Pragmatic — values clarity and shipped quality over cleverness
• Collaborative — communicates confidently with the wider business; comfortable in a multi-disciplinary team Use of Technologies Esyasoft operates primarily within the Google ecosystem and includes the requirement to work as a competent user of:
• Android (Kotlin primary; Java where existing), Jetpack, Compose
• RESTful APIs, Firebase, Google Play services, mapping and payment integrations
• Mobile CI/CD (Fastlane, GitHub Actions); crash and performance tooling (Crashlytics, Sentry) This role may also require flexibility to work with new mobile platforms and tools as Esyasoft's mobile strategy evolves.