Principal Senior Technical Architect - IT Platforms

Overview

In this role you shape, design and govern complex defence-grade IT platforms and mission systems. You’ll work at the intersection of technology, security and operations to ensure architectures meet defence requirements and remain resilient, scalable, and future-proof. You will collaborate with programme leadership, engineers and military partners to translate needs into robust, innovative solutions that support mission success. This position offers exposure to cutting-edge technology and strategic bids, with a clear impact on Defence IT delivery.

Pay / Benefits

• Matched contribution pension scheme, with life assurance
• Generous holiday allowance, with option to purchase additional days
• Health Cash Plan
• Private Medical Insurance
• Dental Insurance
• Employee discount portal

Responsibilities

• Develop end-to-end solution architectures for National Security, Defence IT, C5ISR, mission systems and secure services
• Lead architectural governance ensuring compliance with MOD standards, JSPs, DEFSTANs, NIST and NATO frameworks
• Shape technical roadmaps aligned with growth and defence strategies; evaluate and select technologies (cloud, edge, secure networks, data platforms, AI/ML)
• Collaborate with senior military users, programme managers and engineering leads to translate operational needs into technical solutions
• Deliver compelling and innovative solutions to win and execute bids and projects
• Provide architectural oversight throughout the solution lifecycle from bid/concept to delivery and in-service support

Key requirements

• Extensive experience architecting secure, complex systems within defence, national security, aerospace or similarly regulated sectors
• Deep knowledge of secure networks/cross-domain solutions, cloud/hybrid architectures, data architectures/integration/interoperability standards, mission systems/sensors/platform integration, cybersecurity/cryptographic controls
• Strong understanding of MOD acquisition frameworks, security classifications, and secure-by-design principles
• Expertise in systems engineering, enterprise architecture and model-based approaches
• Proven ability to lead multi-disciplinary teams and influence senior stakeholders

• leadership of multi-disciplinary teams
• influencing senior stakeholders
• collaboration with military users and cross-functional teams
• Secure networks and cross-domain solutions
• Cloud and Hybrid architectures
• Data architectures/integration/interoperability standards

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