About the Role

Key Responsibilities

• Android Application Development & Delivery
• Design, develop, test, and maintain production-quality Android applications in Kotlin, targeting secure and rugged device environments. 
• Write maintainable Kotlin code applying modern Android development patterns including coroutines, Flow, and structured concurrency.
• Integrate applications with RESTful APIs, gRPC services, and message-based backends, applying appropriate authentication and authorisation mechanisms.
• Optimise application performance, battery efficiency, and memory usage for mission-critical mobile deployments.
• Participate in code reviews, upholding coding standards and promoting engineering excellence across the mobile team.

Security & Compliance

• Develop Android applications in accordance with NCSC mobile device guidance, Android Enterprise security controls.
• Implement secure data storage, encrypted communications (TLS/mTLS), and certificate pinning in line with zero-trust mobile security principles.
• Apply threat modelling, static application security testing (SAST), and secure code review practices throughout the development lifecycle.
• Support Mobile Device Management (MDM) integration and Android Enterprise enrolment for government-managed device deployments.
• Contribute to the design of mobile application architectures, selecting appropriate patterns (MVVM, MVI, Clean Architecture) and Kotlin-based frameworks for secure, scalable solutions.
• Collaborate with architects, product owners, backend engineers, and security specialists to translate complex requirements into robust mobile solutions.
• Evaluate emerging Android platform capabilities and assess their applicability to CloudSecure’s product portfolio.

Collaboration & Communication

• Work closely with DevSecOps, cloud infrastructure, and security engineering teams in a multi-disciplinary environment.
• Produce clear technical documentation including design specifications, API integration guides, and operational runbooks for mobile deployments.
• Participate in Agile ceremonies (sprint planning, retrospectives, stand-ups) and contribute to backlog refinement and estimation. 
• Communicate technical concepts clearly to non-technical stakeholders and partner organisations as required.

Required Skills & Experience

• Demonstrable commercial experience developing production Android applications primarily in Kotlin.
• Solid understanding of Android application architecture patterns (MVVM, MVI, Clean Architecture) and their practical application.
• Experience with RESTful API integration, JSON parsing and Retrofit or Ktor client.
• Proficiency with Android build tooling: Gradle (Kotlin DSL), Android Studio and the Google Play or enterprise app distribution pipeline.
• Experience writing automated tests: unit tests (JUnit, MockK), UI tests (Espresso, Compose testing), and integration tests.
• Familiarity with Git, CI/CD pipelines (GitHub Actions, GitLab CI, or equivalent), and Agile delivery practices.
• Ability to obtain and maintain Security Check (SC) clearance.

Highly Desirable

• Knowledge of Mobile Device Management (MDM) platforms (e.g. Microsoft Intune, VMware Workspace ONE) and Android Enterprise enrolment modes.
• Familiarity with secure communications protocols, push-to-talk (PTT) technologies, or tactical mobile applications.
• Understanding of zero-trust network architecture and its application to mobile endpoints. 
• Experience with gRPC and Protocol Buffers in Android applications. 
• Knowledge of NCSC mobile security guidance and UK government secure mobile standards.
• Experience with Kotlin Multiplatform Mobile (KMM) or cross-platform considerations alongside native Android development.
• Active contribution to open-source Android or Kotlin projects.