Senior Java Backend Developer - API & Microservices Modernisation
Location: Telford - minimum 2 days per month onsite, remaining time remote
Contract Length: 12 months
Rate: £550 per day
IR35: Inside IR35
Start Date: Candidates must be available to start w/c 4 January 2027
Client: Central Government
The Role
We are looking for an experienced Senior Java Backend Developer to join a major application modernisation programme within Central Government.
You will be responsible for designing, developing, testing and deploying Java-based RESTful APIs and microservices, with a strong focus on scalability, resilience, maintainability and integration with existing systems.
Essential Skills
- Java - Strong backend development experience.
- Spring Boot - RESTful API and microservices development.
- Microservices Design - Experience designing scalable, resilient and loosely coupled microservices, including service-to-service communication.
- API Design - Strong RESTful API design skills, including API contracts, versioning and integration patterns.
- JUnit - Automated unit testing.
- JSON - Experience working with API data structures and formats.
- Docker - Containerisation of microservices.
- Kubernetes - Hands-on experience deploying and managing microservices.
- Git / CI/CD - Version control and automated build and deployment pipelines.
Desirable Skills
- JPA / Hibernate
- Kibana
- Maven / Gradle
- Mockito
- AWS
- GitLab
- Helm
- OpenAPI / Swagger
- SQL
- Shell scripting
AI-Assisted Development
The programme is actively embracing modern AI-assisted development practices. Candidates should be comfortable using approved AI tools and agents throughout the backend development lifecycle, including:
- Analysis and technical design
- Code generation
- Automated testing
- Debugging
- Code review and refinement
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