Principal Security Architect

Company: X4 Technology
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Job Description:

Location: Hybrid either Corsham or Abby Wood (Bristol) (2-3 days per week)

Employment Type: Permanent

Start Date: Immediate

We’re working with a leading UK security consultancy trusted by government and defence. They are on the look out for a Principal Security Architect (SFIA Level 6) to lead Secure by Design on new application development across MOD programmes.

Principal Security Architect – Key Responsibilities

  • Lead end-to-end security architecture for new applications and services
  • Embed MOD Secure by Design (JSP 440 / JSP 604) into delivery teams
  • Own threat modelling, risk assessment and security design artefacts
  • Be the senior security voice to programme leads and assurance bodies

Principal Security Architect – Key Skills Required

  • Sole British passport holder, live and active SC clearance is essential
  • Senior / principal Security Architect experience (SFIA 6 or equivalent)
  • Proven experience on MOD / Defence projects – essential

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Posted: October 13th, 2026