Security Engineer

Ref No. 25241
Posted 15 Dec 2025

Overview

Employment: Contract

Job description

Security Engineer (Contract) – Outside IR35 

We’re looking for an experienced Security Engineer to join a major defence project. This is a contract role, evaluated as Outside IR35.

Key Responsibilities:

  • Develop and deliver security architecture and documentation for complex systems.
  • Provide security guidance across engineering decisions and ensure compliance with standards.
  • Support accreditation processes and maintain security assurance throughout the project lifecycle.
  • Collaborate with design and test teams to ensure secure implementation and integration.
  • Hands-on involvement in Model-Based Systems Engineering and open architecture development.

Ideal Candidate:

  • Strong defence sector background with experience in security frameworks such as ISO27001, IS1&2, NIST SP 800-53, and others.
  • Proven track record of delivering security designs through accreditation into operational support.
  • Familiarity with large-scale, complex systems and layered security architectures.

Additional Info:

  • Must be eligible for UK Security Clearance.
  • Right-to-work checks required prior to engagement.
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