SC Systems Architect

Job Description

Job Title: SC Cleared Systems Architect (Military Messaging Solution)
\n Location: Corsham
\n Duration: 12 months
\n Rate: Up to £500 per day via an approved umbrella company
\n Must be willing and eligible to go through the SC clearance process

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Our Client is hiring for a reputed client to support the UK Strategic Command with expert system architecture, technical assurance, and migration design services for a secure multi-domain Military Messaging Solution (MMS). If you enjoy solving complex technical challenges while keeping governance and security front and centre, this is a role where your architecture decisions genuinely matter.

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What you'll be doing:

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• Own technical design accountability for the MMS target architecture and ensure strong architectural governance
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• Develop and assure high-level and low-level designs for secure, multi-domain message routing across distinct security domains
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• Verify system topologies align with standard protocols such as STANAG 4406, STANAG 5066, ACP127, and DOI 103(s)
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• Support information assurance mapping, including security boundaries, cross-domain solutions, guard gateways and PKI token structures to meet defence accreditation needs
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• Lead legacy modernisation and IP migration from synchronous serial infrastructure to IP-routed network environments
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• Create obsolescence roadmaps for legacy cryptographic devices and message switches, including bridging architectures to maintain live service continuity
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• Produce reference architectures for integration with CCEB (5-Eyes) and NATO multi-national messaging gateways
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• Standardise configurations to securely onboard maritime endpoints (including mobile naval units and tactical nodes)
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• Act as an independent technical advisor in project updates, stakeholder workshops, and maintain clear, timely communication
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What you'll bring:

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• Strong system architecture experience spanning HLD/LLD, routing and topology assurance
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• Confidence working within MOD-aligned standards and frameworks, including JSP604/453
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• Practical understanding of interoperability engineering and secure integration patterns
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• The ability to communicate architecture decisions clearly to stakeholders and workshops
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• A security-focused mindset, working within OFFICIAL and OFFICIAL-SENSITIVE classifications (with secure access)
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If you're SC cleared and ready to lead mission-critical architectural governance and modernisation, apply now and take the next step with a team that values expertise, clarity and delivery.

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If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website.