Contract
Cyber Security Consultant
CBSbutler Holdings Limited trading as CBSbutler
London
Posted: 14 September 2026 (Today)
Closing date: 14 October 2026
Ref: 225604229
Cyber Security Consultant
Preston, London or Birmingham / Hybrid - 2 days per week onsite
-570 per day inside ir35
Active SC clearance
Sole UK National
We are looking for an experienced Cyber Security Consultant to join a major Defence programme, supporting the onboarding of new service providers into a complex SIAM / multi-supplier environment.
This is a security governance, supplier integration and operational readiness role, rather than a hands-on technical security position.
Key Responsibilities:
- Develop supplier onboarding packs covering security processes, policies, governance and reporting.
- Align incoming suppliers with established Incident Management, Vulnerability Management and Security Assurance processes.
- Define supplier roles, responsibilities and interaction models across the SIAM/OI environment.
- Identify and manage gaps between supplier capabilities and existing security requirements.
- Support Security Management Plans, compliance reporting, audit and assurance activities.
- Support Operational Readiness Reviews (ORR) and Service Commencement activities.
- Produce clear, reusable security and service management documentation.
- Coordinate with incoming and incumbent suppliers, transition teams and client stakeholders.
- Support operational readiness across incident management, vulnerability management, monitoring, backup/recovery, access control and service reporting.
Key Experience:
- Cyber Security Governance, GRC or Security Assurance experience.
- Strong experience within SIAM / multi-supplier environments.
- Good understanding of security and service management processes.
- Experience with supplier onboarding, transition or transformation programmes.
- Strong stakeholder management and documentation skills.
- Experience supporting compliance, audit and assurance activities.
- Knowledge of NIST CSF, Secure by Design and NCSC guidance would be advantageous.
- Defence or wider Government/high-security experience is highly desirable.
If you have the required active SC clearance, are a sole UK national, and have strong security governance/SIAM experience, I''d be keen to hear from you.
Apply now, or email your CV to me directly at (url removed)
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