Software Engineer, Cloud Engineer - Software, Backend Developer

The Role

As a Software Engineer, you will design, develop, integrate and maintain secure software services and mission‑critical applications within classified government environments.

Working across full‑stack and backend engineering, you will contribute to building modern, secure digital solutions across complex HMG technology estates. You’ll operate within multi‑disciplinary Agile teams, collaborating closely with Dev Ops engineers, test engineers, architects, data specialists and mission analysts to deliver high‑quality, production‑grade software.

This role is ideal for someone who enjoys working at pace in secure, technically challenging environments, with opportunities to contribute across API development, cloud‑native services and data integration.

Typical responsibilities include:

• Developing software services using languages such as Java, JavaScript, Type Script, Python or C++
• Building full‑stack applications using frameworks such as React, Node.js, Spring Boot, Next.js or similar
• Designing and developing APIs, microservices and backend services for secure mission systems
• Integrating applications with cloud, data, analytics and streaming platforms
• Supporting the delivery of distributed software systems across secure and operational environments

• 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 Dev Sec Ops  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