Principal Security Architect: Secure by Design for MOD

Company: X4 Technology
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Job Description:

X4 Technology is seeking a Principal Security Architect (SFIA Level 6) for the UK MOD programs. Location is hybrid with Corsham or Abby Wood (Bristol), 2-3 days on site.

You will lead secure by design across new applications, own threat modelling and risk assessment, and act as the senior security voice to programme leads and assurance bodies. Active SC clearance and sole British passport are essential.

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Posted: October 13th, 2026