Key Responsibilities

• Architectural Governance & StrategyOwn and maintain full technical design accountability for the Military Messaging Solution target architecture.
• Develop and assure high-level (HLD) and low-level designs (LLD) for secure, multi-domain military message routing across distinct security domains.
• Ensure all designs comply with OUR CLIENT standards, including JSP604/453.Verify system topologies align with standard protocols such as STANAG 4406, STANAG 5066, ACP127, and DOI 103(s).
• Collaborate on information assurance mapping, including security boundaries, Cross-Domain Solutions (CDS), Guard gateways, and Public Key Infrastructure (PKI) token structures to meet defence accreditation requirements.

• Legacy Modernisation & IP Migration DesignDesign and lead the transition from legacy synchronous serial infrastructure to IP-routed network environments.
• Develop obsolescence roadmaps for legacy hardware cryptographic devices and message switches.
• Produce interim bridging architecture configurations to maintain live service continuity during migration phases.

• External Integration & Interoperability EngineeringDeliver reference architectures for integration with CCEB (5-Eyes) and NATO multi-national messaging gateways.
• Standardise and specify technical configurations for securely onboarding maritime endpoints, including mobile naval units and tactical nodes.

• Stakeholder Engagement & ReportingAct as an independent technical advisor during project updates and stakeholder workshops.
• Maintain clear and timely communication with UK Strategic Command and other relevant stakeholders.
• Ensure all work is conducted within OFFICIAL and OFFICIAL-SENSITIVE security classifications
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