Salary: £100,000 - 100,000 per year Requirements: We require active SC clearance. We require strong UK Defence, MOD, or secure Central Government experience. We require proven experience as a Security Architect, Enterprise Security Architect, Cyber Security Architect, or Security Consultant. We require experience providing security architecture assurance across complex systems or major programmes. We require the ability to produce clear architecture documentation and security artefacts. We require a strong understanding of secure design principles, risk management, threat modelling, and security controls. We require knowledge of UK Government and Defence security standards, guidance, and assurance processes. We require experience working with senior stakeholders across security, architecture, engineering, and delivery. We require strong communication skills and the ability to explain security risk clearly to technical and non-technical audiences. We prefer Army programme experience or strong MOD stakeholder exposure. We prefer experience with Sparx Enterprise Architect, ArchiMate, NAFv4, or similar modelling approaches. We prefer knowledge of Joint Service Publications, NCSC guidance, ISO27001, NIST, CIS, or related security frameworks. We prefer experience across IAM, PKI, secure integration, cloud security, data flows, and security architecture patterns. We prefer experience reviewing HLDs, LLDs, current-state, and future-state designs. We prefer relevant certifications such as CISSP, CISM, ISO27001 Lead Auditor, Microsoft Cybersecurity Architect, AWS Security, or similar. Responsibilities: We lead security architecture reviews across complex Defence or Central Government systems and programmes. We identify risks, control gaps, and design changes required to achieve the required security posture. We produce and maintain security architecture artefacts, including HLDs, LLDs, data flows, security principles, patterns, and architecture building blocks. We ensure security is embedded across solution design, integration, deployment, and operational readiness. We support cyber assurance activity across design, build, deploy, and run phases. We work closely with enterprise architects, solution architects, delivery teams, security stakeholders, and customer representatives. We translate complex security risks and design issues into clear options, recommendations, and decision papers. We support alignment to relevant Defence, Government, and industry security standards. We contribute to technical management plans covering configuration standards, patching, cryptography, IAM, and assurance checkpoints. We provide confident stakeholder engagement across technical, operational, and senior leadership audiences. Technologies: AWS Architect ArchiMate Cloud Cryptography Embedded IAM Support Security More: We are a leading technology consultancy delivering complex, business-critical solutions into secure UK Government and Defence environments. This is a permanent Security Architect role based in Home/Andover on a hybrid basis with onsite attendance two days per week. We offer a salary of £100,000 to £110,000 plus benefits. This is a senior, client-facing position suited to someone who can operate confidently across architecture, cyber security, assurance, and delivery teams, and who can provide security architecture assurance, risk oversight, and secure design guidance across major programmes of work. last updated 19 week of 2026