Senior Java Engineer

Senior Java Engineer

eDV or DV Cleared | £70,000-£90,000 | Cheltenham | National Security

Build software that enables analysts to turn complex, multi-source data into actionable intelligence.

We're looking for experienced Java Engineers to develop secure, cloud-native platforms supporting some of the UK's most sensitive National Security programmes. You'll work across large-scale data ingestion, distributed systems, analyst tooling and secure microservices, solving complex engineering challenges in highly regulated environments.

What you'll be building

* Java services and Apache NiFi data pipelines that ingest, enrich and process large-scale mission data

* Secure Spring Boot microservices deployed on OpenShift and Kubernetes

* Event-driven distributed systems using message brokers to connect services, data stores and processing pipelines

* Modern JavaScript applications and REST APIs that enable analysts to search, visualise and manage operational data

* Cross-domain solutions that move information securely between networks of different classifications

Technology

* Java, Spring Boot, REST APIs

* Apache NiFi, distributed data processing, message brokers

* Kubernetes, OpenShift, cloud-native architecture

* JavaScript, web API integration and authentication

* GitLab, CI/CD, SecDevOps, observability

* Database technologies and distributed systems

We're looking for

* Strong commercial Java development experience

* Experience building scalable microservices and distributed systems

* Spring Boot and cloud-native engineering expertise

* Experience working with Kubernetes or OpenShift

* A passion for clean, resilient software engineering

Experience with Apache NiFi, secure environments or modern JavaScript is advantageous.

Why join?

Founded by engineers, this is a business where technical excellence comes first. You'll spend 10% of your time on learning and development, work alongside experienced engineers solving genuinely difficult problems, and build software that has a real operational impact.

Benefits include:

* 10% pension contribution

* 10% dedicated learning and development time

* Relocation support

* 37.5-hour working week

Current eDV or DV clearance, or recently active DV clearance, is essential.

If you're looking for a Java role where distributed systems, secure engineering and modern cloud technologies come together to solve real-world problems, we'd love to hear from you
Only candidates based in UK and eligible to work in UK are allowed