SC Cleared Lead Security Architect - Defence DevSecOps and AI/ML

We are seeking an experienced SC Cleared Lead Security Architect to join a high-profile Defence and National Security programme focused on secure AI/ML adoption, multi-cloud platforms, DevSecOps, and edge computing environments. This is a strategic leadership role where you will own security architecture, assurance, and governance across complex cloud and AI-enabled solutions, supporting secure collaboration across multiple stakeholders and international partners. Key Responsibilities Lead security architecture across AI/ML, cloud, edge, and DevSecOps environments. Define secure-by-design principles and drive assurance activities end-to-end. Conduct threat modelling, risk assessments, and security architecture reviews. Define security controls, trust boundaries, and cross-domain data movement guardrails. Establish DevSecOps security roadmaps, policy-as-code controls, and risk-based CI/CD security gates. Drive software supply chain security, including artefact signing, SBOMs, provenance, and secure promotion processes. Chair security working groups and engage with senior stakeholders across technical and business functions. Mentor and support junior security professionals. Essential Skills andamp; Experience 5+ years'' experience in Security Architecture or Cyber Security leadership roles. Strong experience designing secure multi-cloud and edge architectures. Deep understanding of DevSecOps, CI/CD security, threat modelling, and risk management. Experience implementing ..... full job details .....