Senior Java Developer x2 – Cloud-Native / Event-Driven Systems | Public Sector | Up to £470/day (Inside IR35)
We’re hiring 2x Senior Software Engineers to join a major UK public sector programme, building cloud-native, event-driven services that support critical national digital infrastructure.
You’ll work alongside Technical Architects, Data Engineers and Product teams to design and deliver secure, scalable APIs and event-driven services — helping raise engineering standards while supporting and evolving existing live systems.
Location: Leeds, Sheffield or London (hybrid — travel flexibility dependent on team)
Clearance: Active SC clearance required, or strong confidence of obtaining it
Essential: Prior experience working within UK Government or wider public sector is required
What you’ll be doing:
- Designing and building secure, scalable cloud-native services and REST APIs
- Developing event-driven architectures using asynchronous messaging patterns
- Designing and implementing microservices within AWS
- Building integrations across operational systems via APIs and event-based architectures
- Applying Domain Driven Design (DDD) and modern software design patterns
- Developing secure services using OAuth2, JWT and related standards
- Translating business requirements into maintainable technical solutions
- Designing for observability, resilience and operational support
- Building reusable components and engineering patterns to promote consistency
What we’re looking for:
- Strong production experience across at least two of the following: Java, Kotlin, Go
- Strong experience building RESTful APIs (Spring Boot or equivalent)
- Experience with event-driven systems (Kafka, SNS/SQS, EventBridge)
- Solid grounding in automated testing, CI/CD, code review and version control
- Cloud-native development experience within AWS
- Experience with Infrastructure as Code
- Experience working in agile, multidisciplinary delivery teams
- Strong communication skills — technical and non-technical stakeholders
- Previous UK Government or public sector experience essential
Nice to have:
- Experience with telemetry, IoT or event streaming platforms
- Experience with geospatial or location-based systems
If you’re an experienced engineer confident across two or more of Java, Kotlin and Go, with a public sector background and active or eligible SC clearance, get in touch or drop me a message to find out more.
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