Android Software Engineer (Kotlin)

Cheltenham / Hybrid / Remote

My client is looking for an experienced Android Software Engineer with strong Kotlin expertise to join a growing UK technology business delivering secure mobile solutions into the national defence sector.

This is an opportunity to work across live programmes, next-generation product development, and cutting-edge proof-of-concept work, using modern Android engineering to solve complex real-world challenges. It would suit someone who wants to build secure, high-performance mobile applications in an environment where technical quality, innovation, and real-world impact genuinely matter.

Benefits

• £70,000 - £85,000 basic salary
• Bonus
• Hybrid working and flexibility
• Pension
• Private healthcare
• Electric car scheme
• Training and development opportunities
• Friendly, knowledgeable, peer-sharing culture
• Career progression

The role and responsibilities

• Designing, developing, testing, and maintaining high-quality Android applications
• Building secure, robust mobile applications in Kotlin
• Applying modern Android architecture patterns such as MVVM, MVI, and Clean Architecture
• Writing clean, maintainable code using modern Android practices including coroutines, Flow, and structured concurrency
• Integrating Android applications with REST APIs, backend services, and secure communications layers
• Supporting performance optimisation, battery efficiency, and memory usage improvements
• Participating in code reviews and helping drive engineering quality across the mobile estate
• Working closely with architects, backend engineers, cloud engineers, DevSecOps, and security specialists
• Contributing to secure mobile design decisions in line with modern security principles
• Supporting Agile delivery, technical discussions, and ongoing product improvement

Key skills

• Strong commercial experience as an Android Software Engineer, Android Developer, or Mobile Developer
• Strong commercia
• l experience developing Android applications in Kotlin
• Good understanding of Android architecture patterns including MVVM, MVI, and/or Clean Architecture
• Experience integrating RESTful APIs
• Strong knowledge of Android build tooling including Gradle
• Experience with modern Android tooling and libraries
• Experience with automated testing such as JUnit, Mockito, and UI testing
• Familiarity with Git, CI/CD pipelines, and Agile software delivery
• Strong communication and collaboration skills
• British citizenship and ability to obtain MOD SC clearance

Desired skills

• Existing SC clearance
• Experience working in defence, secure technology, or other highly regulated environments
• Knowledge of Mobile Device Management (MDM) platforms such as Microsoft Intune or VMware Workspace ONE
• Familiarity with Android Enterprise enrolment modes
• Exposure to secure mobile applications or operationally focused mobile technology
• Understanding of secure mobile / zero-trust principles
• Experience with gRPC and Protocol Buffers
• Knowledge of secure mobile standards or guidance
• Exposure to Kotlin Multiplatform Mobile (KMM)
• Please note: existing SC clearance is advantageous but not essential. Candidates must be British citizens and eligible to undergo MOD SC clearance

If you would like more details about this position then please apply for the link.

All the best,

Charlie Syrett

Richmond Square Consulting Ltd

Alternative job titles: Mobile Developer, Android Developer, Smartphone Developer, Application Developer, Software Developer

Buzzword search: Android, Kotlin