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.