Join a specialist consultancy delivering secure, high-impact software solutions at the heart of national security and intelligence operations. This role plays a key part in building the systems that turn complex data into actionable insight.
Role Overview:
- Location: Cheltenham, London or Manchester (up to 80% onsite)
- Package: Competitive + benefits
- Industry: Security & Intelligence / Government Technology
What You’ll Be Doing:
- Develop and maintain secure, high-performance Java backend services for mission-critical systems
- Design scalable microservices and APIs that power data-driven platforms and operational tools
- Build distributed applications capable of handling large data volumes with speed and reliability
- Integrate services with data platforms, streaming pipelines and AI/ML-driven systems
- Apply secure coding principles to meet strict performance and security standards
- Contribute to architecture decisions, code quality, testing and continuous improvement
- Implement monitoring, logging and observability to support live environments
Main Skills Needed:
- Strong Java development experience (Java 11+) using frameworks like Spring Boot
- Solid understanding of software architecture, OOP and API design
- Experience building microservices and distributed systems
- Proven ability to deliver scalable, high-performance backend applications
- Familiarity with DevSecOps tools (Docker, Kubernetes, CI/CD, testing, observability)
- Confident working with stakeholders to translate requirements into technical solutions
- Active enhanced DV clearance
What’s in It for You:
- Work on meaningful projects that directly support national security outcomes
- Exposure to complex, data-intensive systems and modern technologies
- Collaborative, agile teams delivering real impact at pace
- Strong focus on engineering quality, innovation and continuous learning
- Opportunities to grow within a highly specialised technical environment
Curious? Apply now — or grab five minutes with us to hear more.
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. You can opt out of this at any time simply by contacting one of our consultants.