Design, develop and maintain secure software applications, services, APIs and integrations within classified environments
Build scalable, distributed systems supporting data, analytics and mission-critical workloads
Develop full-stack features and backend services aligned to performance, reliability and security requirements
Contribute to software design, architecture decisions and technical documentation
Apply modern software engineering practices, including clean coding, testing and code reviews
Collaborate within Agile teams, contributing to sprint planning, refinement, reviews and retrospectives
Support DevSecOps delivery by working with CI/CD pipelines, containerised deployments and cloud-native services
Integrate applications with cloud platforms, data services and streaming technologies
Implement monitoring, logging and observability to support live service operation
Support secure deployment and operation of applications across development, test and production environments

Experience working within the UK Security & Intelligence, defence or other secure government environments
Strong knowledge of modern software engineering practices, frameworks and secure application development across HMG-style technology estates
Proficiency in one or more programming languages such as Java, JavaScript, TypeScript, Python or C++, with experience building APIs and full-stack applications
Experience designing and developing distributed systems, including microservices, event-driven architectures and high-performance backend services
Experience with cloud-native development, particularly AWS, containerised applications and modern infrastructure concepts
Understanding of DevSecOps practices, including CI/CD pipelines, automated testing, code quality controls and secure development standards
The successful candidate must hold a current high level security clearance.

Software Engineer – Security & Intelligence

Key skills