Security Architect Infrastructure - DV - £700 Day - Outside IR35 Security Architect required for a defence-aligned programme modernising a highly secure digital capability. You will lead a secure-by-design review, assess architectural and control gaps against current defence security standards, and define the target state architecture for a critical platform. Key experience required: Proven Security Architect background within defence or high-assurance environments Strong understanding of security standards, architectural controls and risk-based design Experience conducting formal security assessments and producing governance-ready documentation Confident engaging with senior technical and assurance stakeholders Hertfordshire based client - minimum 1 day a week onsite required. DV clearance is essential. Apply for a confidential discussion.