Senior to Principal Software Engineer

We are hiring Software Engineers at various levels (Senior, Lead, and Principal) to support high-priority defense and national security programs. These onsite roles are based in Cheltenham, and you will work on long-term, mission-critical systems that shape the future of UK defense technology. Whether you are looking to step up into a lead role or already operating at a principal level, these positions offer the opportunity to join a collaborative, purpose-driven engineering environment with access to exciting, impactful work in secure surroundings. Key technologies and skills include Java (the primary language), exposure to JavaScript or Python, cloud platforms (AWS or Azure), DevOps tooling (Jenkins, GitLab, Docker, Kubernetes, OpenShift), and databases (SQL, MongoDB, Elasticsearch). Additionally, experience working in secure or regulated environments is preferred. What you'll receive includes a competitive salary based on experience and level, flexible working options (including a 9-day fortnight and compressed hours), private healthcare, a performance bonus, and strong career development support. If you are a driven engineer with DV clearance and a strong Java background, I encourage you to apply now and explore where your skills could take you.