Location: South East England (with UK-wide travel to secure sites)
Security Clearance: UK DV Clearance (mandatory)
Start Date: ASAP
Duration: 4.5 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 across complex, 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
ato
Lead architectural governance 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 build complex, multi-layered architecture views for varied stakeholders

Strong knowledge of architecture frameworks (e.g., TOGAF)

Experience operating within secure environments

Hands-on experience with enterprise architecture toolsets (e.g., Sparx)

Understanding of cloud architectures, integration patterns, and DevSecOps approaches

Strong communication and stakeholder-management skills at senior levels

What you need to do now

If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.

If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.