Role – Senior Android Developer, Kotlin / Android Location – Poole, 1 Week Onsite / 1 Week Offsite Salary - £55,000 to £75,000 Candidates must be eligible for SC Clearance to be suitable for this role. We're delighted to be working in partnership with an innovative SME systems integrator delivering mission-critical software solutions across the UK public sector. With a strong focus on data-driven decision support and secure systems, they are looking to add an experienced Senior Android Developer to their high-impact Defence programme. The Opportunity This role offers the chance to work on a highly sensitive and technically complex project within the Defence domain. You'll contribute to the design and development of an Android-based application that supports key operational capabilities. The environment is collaborative, agile, and fast-paced, and your work will have a tangible impact on national infrastructure and public safety. This is a hybrid position with a structured rhythm of 1 week onsite and 1 week remote, based in Poole. The Role As a Senior Android Developer, you will take a lead role within the development team, influencing technical direction and helping define and implement secure, scalable solutions. In addition to hands-on development using Kotlin and Jetpack Compose, you will: Drive sprint planning, estimations, and retrospectives Mentor and coach junior developers, providing code reviews and development guidance Take ownership of key features and architectural decisions Liaise with Product Owners and stakeholders to refine and deliver high-value functionality Promote best practices in secure coding, modular architecture, and testing The Person We're looking for a confident and capable Android Developer who is ready to step up into a leadership role — or who already brings proven senior-level experience. You should be proactive, solutions-focused, and comfortable operating in high-trust environments. Must Have: Strong Android development experience Kotlin, Jetpack Compose, and Room Database Experience mentoring junior developers or leading small teams A proactive mindset and ability to work autonomously Nice to Have: Retrofit / OkHttp for network communication MVVM design pattern Secure Data Store implementation Testing: AssertJ, Mockito, Compose UI testing Very Nice to Have: Modular architecture design Cryptographic experience (e.g., Bouncy Castle) Android Device Management tools (Samsung Knox, Device Policy Manager) If you would like to learn more, please apply through the advert and we will be in touch to discuss in more detail. ADZN1_UKTJ