Security Assurance Consultant in Corsham, Wiltshire

Security Assurance Consultant

Clearance: SC clearance required as a minimum

Rate: up to £650pd outside IR35

Duration: Initially until 31/03/27 with extension options likely

Location: Corsham (1-2 days per week onsite)

We are looking for an experienced Security Assurance Consultant to support a major UK Defence programme, providing assurance across complex, sensitive systems and environments.

This role would suit someone with a strong background in MOD, Defence Digital, secure systems, risk management, and evidence-based assurance. You will work closely with technical teams, programme stakeholders, and security authorities to ensure security risks are understood, managed, and appropriately documented.

Key responsibilities:

• Deliver security assurance activity across a Defence programme, ensuring alignment with MOD and government security requirements.
• Support the production and review of security documentation, risk assessments, assurance artefacts, and evidence packs.
• Engage with stakeholders across technical, delivery, and governance teams to identify risks, gaps, and improvement actions.
• Provide advice on security controls, accreditation, assurance processes, and risk management.
• Support security governance meetings and help ensure assurance outputs are clear, accurate, and defensible.

Required experience:

• Previous experience working within Defence, MOD, or secure government environments.
• Strong understanding of security assurance, risk management, and accreditation processes.
• Experience producing high-quality security documentation and assurance evidence.
• Knowledge of MOD security policies, Secure by Design, JSPs, NIST, ISO 27001, or similar frameworks.
• Ability to work confidently with technical and non-technical stakeholders.