Defence DevSecOps Lead AI/ML Security Architect

Henderson Scott seeks a Lead Security Architect for a Defence DevSecOps and AI/ML programme in Portsmouth. Expect a remote-first setup with 50% remote and 50% onsite work. This contract runs from around 24/08/2026 to 23/11/2026, and is paid inside IR35 through an umbrella provider.

You will align security with UK Defence priorities and drive end-to-end assurance across diverse cloud and edge environments. Applicants should have MOD SC clearance, sole UK nationality, and a proven track record in

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