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 ID, 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