Location: South East England (with UK-wide travel to secure sites)
Security Clearance: UK DV Clearance (mandatory)
Start Date: ASAP
Duration: months (until 27 March 2026)
We are looking for an experienced Lead Architect to join a high-security architecture team, helping shape enterprise-wide strategies and technical solutions acrossplex, secure programmes. This role involves working with multi-layered architectures, guiding senior stakeholders, and ensuring alignment between business goals and technology delivery.
Key Responsibilities
Develop and evolve enterprise architecture frameworks and standards
Produce architecture views across application, data, technology, security, and business layers
Create system context diagrams, integration models, capability maps, and technology roadmaps
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Lead architecturalernance across multiple secure programmes
Maintain architectural artefacts using tools such as Sparx Enterprise Architect or similar
Tailor viewpoints for technical teams, programme boards, and senior leadership
Conduct architecture reviews and assurance activities
Provide strategic architectural guidance and support proposal activity
Essential Requirements
Proven experience as an Lead Architect within secure or highly regulated environments
Ability to buildplex, multi-layered architecture views for varied stakeholders
Strong knowledge of architecture frameworks (, TOGAF)
Experience operating within secure environments
Hands-on experience with enterprise architecture toolsets (, Sparx)
Understanding of cloud architectures, integration patterns, and DevSecOps approaches
Strongmunication and stakeholder-management skills at senior levels