Security Architect - 6 Month Contract - Hybrid in London, Bristol or Birmingham - Inside IR35

We are looking for a Security Architect to provide security architecture leadership on a 6-month hybrid contract (1 day per week on-site) based in London, Bristol, or Birmingham. The role covers the design, assurance, and governance of secure solutions within a regulated environment, translating business and technical requirements into security architectures that meet policy, risk, and compliance obligations. Candidates must hold active SC or DV clearance., * Define and own security architecture and design for complex solutions, ensuring alignment with Secure by Design principles and applicable security policy and standards

• Produce and review security artefacts including HLDs, LLDs, security architecture documentation, and design patterns
• Conduct security risk assessments, identify threats and vulnerabilities, and recommend and agree mitigations with stakeholders
• Provide design assurance and security guidance to engineering and project teams throughout the delivery life cycle
• Support accreditation and assurance activities, including evidence production and engagement with assurance bodies
• Represent security at design boards and governance forums, communicating risk clearly to technical and senior stakeholders

• Proven experience as a Security Architect designing and assuring secure solutions in Government, Defence, or other regulated environments
• Strong knowledge of security architecture frameworks and standards such as NIST, ISO 27001, and NCSC guidance, with Secure by Design experience
• Experience conducting security risk assessments and producing security design documentation (HLDs/LLDs)
• Strong understanding of identity and access management, network security, cloud security, and Zero Trust principles
• Strong stakeholder management and communication skills - active SC or DV clearance required - desirable: CISSP, CCSP, SABSA, or TOGAF certification