Back End Developer
Summary
Develops secure back-end services for defense and national security using Java, Spring Boot, and RESTful APIs with SQL/NoSQL databases and containerized deployments.
Salary: £? - ? per year
Requirements:- Proven software development experience within MOD, Defence, National Security or similarly secure environments.
- Strong commercial Java development experience.
- Expertise with Spring Boot.
- Experience designing and developing RESTful APIs.
- Strong SQL and NoSQL database experience.
- Experience with Docker, Kubernetes or other container technologies.
- Familiarity with CI/CD pipelines and DevSecOps practices.
- Experience developing secure, scalable and maintainable backend services.
- Current DV Security Clearance.
- Ability to work onsite at an MOD location in London four days per week.
- Previous experience delivering within MOD, Defence, Defence Intelligence, Strategic Command or wider National Security organisations.
- Comfortable working with OFFICIAL-SENSITIVE and classified material where authorised.
- Design, develop and maintain Java-based microservices.
- Build secure RESTful APIs supporting workflow, metadata, document management and integration services.
- Develop workflow integrations using orchestration technologies where required.
- Integrate with enterprise data sources, identity services and existing Defence systems.
- Design and develop scalable persistence layers using SQL and NoSQL databases.
- Contribute to cloud-native deployments, containerisation and CI/CD pipelines.
- Implement secure coding practices, logging, monitoring and audit capabilities.
- Participate in technical design sessions, code reviews and agile ceremonies.
- AI
- Backend
- CI/CD
- Cloud
- DevSecOps
- Docker
- Support
- Java
- Kubernetes
- NoSQL
- SQL
- Security
- Spring
- Spring Boot
- microservices
- AWS
- OpenSearch
- BPMN
- Camunda
- ElasticSearch
- Istio
- MongoDB
More:
We are building the core services behind a next-generation Defence Intelligence platform. Our programme is delivering an AI-enabled Defence Intelligence capability designed to improve visibility of operational data, streamline complex workflows and support faster, more informed decision-making. You will work within a highly secure environment alongside multidisciplinary engineering teams, contributing to innovative digital capabilities that support Defence operations. This is a contract role at £500-£540 per day, outside IR35, based in London at an MOD site with a working pattern of four days onsite.
last updated 32 week of 2026