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Security Assurance Adviser

ExperisLondon🇬🇧United KingdomPosted 24 Sept 2026

Why This Role Stands Out

This hybrid Security Assurance Adviser role offers a fantastic opportunity to develop your GRC expertise within a reputable UK defence setting, ensuring the security of critical networks and cloud environments. If you are a mid-senior professional with a passion for risk assessment and compliance, you will thrive in this impactful position and can expect a competitive daily rate. Apply now to contribute to vital security initiatives!

Quick Overview

Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
Hybrid
Location
London, United Kingdom
Microsoft Word

Job Description

Role: Security Assurance Advisor

Location: London / Epsom / Birmingham / Manchester - Any location (Hybrid)

Duration: 12 Months

Day rate: 600 - 700 Inside IR35

We are seeking an experienced Security Assurance Consultant with a strong Governance, Risk & Compliance (GRC) background to support the security assurance and accreditation of secure networks and cloud environments within a UK defence-related setting.

This role will focus on maintaining security approvals, conducting risk assessments, supporting compliance activities, and ensuring alignment with MOD and wider government security standards.

Key Responsibilities

  • Support the implementation and continual improvement of secure network security assurance frameworks, processes and procedures.
  • Maintain secure network accreditations and approvals, including risk assessments, security cases, compliance statements and supporting evidence.
  • Conduct security assessments of core cloud platforms, including Microsoft 365.
  • Support compliance with Defence Cyber Certification (DCC) requirements.
  • Participate in cloud security assurance activities for both core and non-core cloud systems.
  • Conduct compliance audits to ensure assurance activities are being completed across secure networks and cloud services.
  • Monitor changes to MOD, government and industry security standards, incorporating requirements into assurance processes.
  • Provide security assurance guidance to influence the design, operation and ongoing management of secure environments.
  • Maintain and periodically review security risk assessments, communicating findings and tracking remediation activities.
  • Monitor emerging cyber threats and assess their impact on secure networks.
  • Track and report progress against security action plans.
  • Engage with internal and external stakeholders, including security teams, project teams, HR vetting, procurement functions and MOD representatives.
  • Support security operating procedure updates and annual reviews.
  • Assist with external audits, including ISO 27001 and client-led assessments.
  • Oversee the security approval and ongoing assurance of third parties connecting to or handling information from secure networks.
  • Assess specialist devices requiring connection to secure networks.
  • Maintain a coordinated assurance programme to ensure activities are delivered on time.
  • Provide reporting support and assurance metrics as required.

Essential Skills & Experience

  • Proven cyber security experience within a UK MOD or defence-related environment.
  • Strong understanding of governance, risk management and compliance principles.
  • Familiarity with UK MOD security standards, including:
    • Def Stan 05-138 (v3 & v4)
    • Cyber Security Model (CSM)
    • Secure by Design
    • Industry Security Notices (ISNs)
  • Knowledge of UK Government security standards, including:
    • Government Security Policy Framework (SPF)
    • NCSC Cloud Security Principles
    • NCSC SaaS Security Principles
    • Cyber Essentials
    • CHECK Penetration Testing Scheme
  • Familiarity with UK Government physical and personnel security requirements, including NPSA and UKSV.
  • Experience conducting risk assessments using recognised methodologies such as IS1 and NIST SP 800-30.
  • Strong written and verbal communication skills, with the ability to clearly justify and explain security requirements.
  • Ability to build relationships with both senior stakeholders and technical teams.
  • Strong organisational skills with the ability to manage multiple priorities.
  • High attention to detail with a proven completer-finisher mindset.
  • Competent user of Microsoft Word, Excel and PowerPoint.

Desirable

  • Knowledge of ISO 27001, CMMC and the NIST Cyber Security Framework, including SP 800-53.
  • Familiarity with UK nuclear security regulations and ONR Security Assessment Principles (SyAPs).

If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website.

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