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

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• Java services and Apache NiFi data pipelines that ingest, enrich and process large-scale mission data
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• Secure Spring Boot microservices deployed on OpenShift and Kubernetes
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• Event-driven distributed systems using message brokers to connect services, data stores and processing pipelines
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• Modern JavaScript applications and REST APIs that enable analysts to search, visualise and manage operational data
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• Cross-domain solutions that move information securely between networks of different classifications
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Technology

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• Java, Spring Boot, REST APIs
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• Apache NiFi, distributed data processing, message brokers
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• Kubernetes, OpenShift, cloud-native architecture
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• JavaScript, web API integration and authentication
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• GitLab, CI/CD, SecDevOps, observability
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• Database technologies and distributed systems
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We're looking for

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• Strong commercial Java development experience
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• Experience building scalable microservices and distributed systems
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• Spring Boot and cloud-native engineering expertise
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• Experience working with Kubernetes or OpenShift
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• A passion for clean, resilient software engineering
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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:

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• 10% pension contribution
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• 10% dedicated learning and development time
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• Relocation support
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• 37.5-hour working week
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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.