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.
  
  

People Source Consulting Ltd is acting as an Employment Business in relation to this vacancy. People Source specialise in technology recruitment across niche markets including Information Technology, Digital TV, Digital Marketing, Project and Programme Management, SAP, Digital and Consumer Electronics, Air Traffic Management, Management Consultancy, Business Intelligence, Manufacturing, Telecoms, Public Sector, Healthcare, Finance and Oil & Gas.