Security Assurance Consultant - Defence

Job Title: Security Consultant - Secure by Design / Security Assurance
Location: Hybrid - Remote & Onsite (Corsham, Wiltshire)
Contract Length: 9 Months
Clearance Required: DV
Rate: up to £700pd outside IR35
Start Date: 1st July

Responsibilities:

Provide expert security consultancy across the project lifecycle, with a focus on secure-by-design practices.
Lead or support security risk assessments, threat modelling, and architectural reviews.
Support the production and review of security documentation (RMADS, SyOps, Security Cases, etc.).
Engage with technical and delivery teams to embed security requirements into solution design.
Ensure alignment with MOD policies and relevant NCSC guidance.
Conduct assurance activities, including reviewing supplier deliverables and ensuring appropriate risk mitigations are in place.
Support accreditation activities and act as a key interface with Accreditors and other MOD assurance stakeholders.
Champion best practice security principles and contribute to developing a security-conscious culture across the programme.Essential Skills & Experience:

Proven experience delivering security assurance within UK Government or Defence environments.
Strong understanding of Secure by Design, risk management and assurance frameworks.
Familiarity with MOD and HMG security policy, and NCSC guidance.
Experience producing or reviewing technical security documentation
Ability to influence stakeholders and work collaboratively across multi-disciplinary teams.
Security-related qualifications (e.g., CISSP, CISM, CCP, ISO 27001 Lead Auditor).
Experience with cloud security
Background in supporting complex ICT systems or programmes within secure environments.

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