Salary: £150,000 - 150,000 per year Requirements: Active DV Clearance required Strong background in network infrastructure security design Proven security architecture experience Experience with vulnerability scanning solutions Familiarity with Agile delivery environments Knowledge of NIST and Secure by Design principles Strong stakeholder communication skills Responsibilities: Embed security controls into infrastructure design and delivery Act as our security SME within Scrum teams Design and document secure architecture solutions Ensure alignment with Secure by Design and NIST frameworks Collaborate with architects, engineers, and test teams Present and defend security decisions to senior stakeholders Technologies: Architect Network Security More: We are seeking a Technical Security Architect to join a high-profile UK defence programme in London, working fully onsite at a rate of £750 per day inside IR35. We will embed security across complex network infrastructure within an Agile delivery environment, and the role offers the opportunity to work closely with architects, engineers, test teams, and senior stakeholders on a critical programme. last updated 24 week of 2026