Senior Security Architect; SC Clearance

Position: Senior Security Architect (Active SC Clearance)
Location: South East London

Senior Security Architect (Active SC Clearance)

Location:

Fully Remote (UK) Clearance:
Active SC Clearance Required Contract Length:
Until February 2027 Rate:
Up to £600 per day (Outside IR35) Shape the Security of Critical UK Government Services We are seeking an experienced Senior Security Architect to join a major public sector programme, playing a key role in designing and assuring the security of large-scale digital services operating across cloud environments. This is an excellent opportunity for a senior cyber security professional with strong government experience to provide strategic security leadership, influence architectural direction, and support the secure delivery of business-critical platforms.

What You'll Be Doing Providing security architecture leadership throughout the full project lifecycle, from discovery through to service retirement. Advising stakeholders on Secure by Design principles and security best practices. Reviewing and assuring solution designs against established security standards, patterns and architectural frameworks. Leading threat modelling, risk assessments and security design reviews. Identifying security risks and recommending effective mitigation strategies.

Supporting cloud-first solutions across Azure and wider multi-cloud environments. Reviewing penetration testing and IT Health Check outcomes and developing remediation plans. Working closely with engineering, assurance and risk teams to validate security controls. Producing high-quality security architecture artefacts, standards and blueprints. Monitoring emerging cyber threats and incorporating threat intelligence into security decision-making. Experience Required Extensive experience in Security Architecture within Central Government or the wider Public Sector.

Strong understanding of ISO 27001, NIST CSF and CIS Controls. Deep knowledge of NCSC and HMG security standards and guidance. Expertise in Azure security technologies, including Entra , Azure Policy, Key Vault and Identity & Access Management. Experience securing cloud-native and microservices-based architectures. Strong background in threat modelling, risk analysis and security assurance. Experience supporting penetration testing and control effectiveness reviews.

Desirable Certifications CISSP CISM SABSA TOGAF Azure Solutions Architect Reasonable Adjustments:
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