Defence Security Architect – Strategic Cyber Architecture

Company: Amentum
Apply for the Defence Security Architect – Strategic Cyber Architecture
Location: London
Job Description:

Amentum is seeking an experienced Security Architect to join our UK defence-focused team in London. You will design and maintain security architectures for ICT capabilities, safeguarding data and systems across projects in Critical National Infrastructure, National Security, Defence and Nuclear sectors.

Applicants should have 5 years’ UK Defence security architecture experience, strong analytical skills, and the ability to produce clear technical documentation for diverse audiences.

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Posted: October 5th, 2026