Senior Software Engineer

New Today

Senior Software Engineer – Secure, Mission-Critical Systems
On-Site | £42,700 – £64,100 | Relocation Assistance Available
UK Citizenship Required | Must Hold UK-Highest Level Security Clearance
Code solutions that protect security and shape tomorrow.
My client is seeking a Senior Software Engineer to contribute to high-impact projects across defence, intelligence, and cyber. You’ll design, build, and maintain critical backend and cloud-hosted systems using Java, Python, and/or JavaScript, collaborating within agile teams to deliver production-grade code.
This is an opportunity to work on deeply meaningful tech with complex engineering challenges in a secure, mission-focused environment.
What You’ll Do:
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Develop software features hands-on, including code reviews and peer feedback
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Design scalable components aligned with the product roadmap and engineering standards
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Break down large initiatives into agile deliverables and mentor junior team members
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Support and manage CI/CD pipelines using modern DevOps tooling
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Demonstrate working solutions to customers and internal stakeholders
✅ What You’ll Bring:
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Strong experience coding in Java, JavaScript, or Python
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Familiarity with cloud platforms – AWS or Azure
Experience using tools like Jenkins, GitLab CI, Docker, Kubernetes, or OpenShift
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Understanding of modern databases: SQL, Elasticsearch, MongoDB
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Experience working in secure, regulated, or mission-critical environments
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Ability to work on-site and already holding UK highest-level security clearance
Nice to Have:
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Exposure to secure software lifecycle and threat modelling
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Agile/Scrum experience with iterative development
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Familiarity with observability tooling, REST APIs, or microservices
Why Join?
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Work on tech with direct security impact
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9-day fortnight option (every other Friday off)
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Private healthcare, bonus schemes, training pathways
Be part of a growing, inclusive community building the future of defence & intelligence software
Apply
Location:
Manchester

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