Personnel Security Assurance Lead 2LD

Sizewell C is entering an exciting phase of growth as we mature into an independent organisation and continue building one of the UK’s largest and most important energy projects. We are now recruiting the below position:

Position: Personnel Security Assurance Lead

Security Clearance: Active Security Clearance (SC) is preferred; eligibility to obtain SC clearance is required.

Location: London with hybrid working; regular travel between Suffolk and Gloucestershire office locations

Contract: Permanent, full-time

Salary: £66,866 - £70,000 depending on experience, plus benefits

Benefits include:

• Annual Leave: 28 days per annum, increasing to 30 days after 5 years of service, plus bank holidays


• Bonus: 5% annual bonus


• Pension Contributions: Defined Contribution Pension Scheme with up to 7.5% employee contribution and 15% employer contribution


• Life Assurance: Up to 8 x salary

Role Overview:

We are seeking a Personnel Security Assurance lead to provide Level 2 assurance oversight across personnel security arrangements for the Sizewell C programme. Reporting to the Deputy Head of Security, Resilience and Assurance you will lead personnel security assurance activities covering vetting, onboarding, workforce mobilisation, access control and compliance. Working closely with HR, Recruitment, Training, Site Security and Nuclear Services Security (NSS), you will help ensure personnel security arrangements are effective, proportionate and aligned with regulatory and organisational requirements. This is a highly visible role providing the opportunity to influence senior stakeholders, shape personnel security strategy and support the secure mobilisation of one of the UK's largest infrastructure projects.

Role Responsibilities:

• Lead the Personnel Security Line 2 Assurance Programme for Sizewell C, delivering risk-based assurance, reviews and monitoring activities.


• Provide oversight of vetting, onboarding, access approvals and personnel security controls across the programme.


• Develop and maintain personnel security policies, procedures, standards and guidance.


• Identify personnel security risks and ensure corrective actions are implemented and tracked through to completion.


• Support the continuous improvement of personnel security processes, controls and governance arrangements


• Manage corporate office access control arrangements and act as the escalation point for complex personnel security matters.


• Lead personnel security input into audits, inspections and assurance activities.


• Manage the NSS personnel security task order, including performance monitoring and delivery against agreed objectives.


• Provide expert advice to managers and stakeholders on personnel security, vetting and access requirements.


• Produce assurance reports, performance updates and recommendations for senior leadership and governance forums.


• Build strong relationships with regulators, suppliers and internal stakeholders to support compliant and secure operations.


• Promote a positive security culture through engagement, awareness and continuous improvement activities.

Knowledge & Skills

• Strong knowledge of personnel security, vetting, pre-employment screening, onboarding and access control within regulated or security-sensitive environments.


• Thorough understanding of assurance, compliance monitoring, audit readiness and governance requirements, including maintaining accurate and auditable records.


• Leading risk-based personnel security assurance activities, assessing evidence, identifying findings and driving actions through to closure.


• Providing clear, proportionate advice on personnel security risks, vetting requirements, onboarding controls and access-related matters.


• Influencing and constructively challenging senior stakeholders to support effective risk-based decision making.


• Working collaboratively across HR, Recruitment, Training, Nuclear Services, Security and wider business functions to ensure compliant mobilisation and personnel security controls.


• Development and maintenance of personnel security procedures, governance documentation, reporting and management information.


• Excellent written and verbal communication skills, with the ability to produce concise reports, communicate complex issues clearly and maintain robust records.

• Experience leading or contributing to governance forums, working groups or improvement initiatives relating to vetting, onboarding, access management, offboarding or assurance.


• Knowledge of governance and assurance requirements within regulated, nuclear, critical national infrastructure or major project environments.

• Proven experience within a regulated, high-assurance or security-sensitive environment, with responsibility for personnel security, vetting, onboarding, access control or related assurance activities.


• Demonstrated capability in identifying and resolving complex personnel security risks and issues through sound judgement, escalation and effective mitigation.


• Leading or supporting audits, reviews, assurance activities or compliance inspections, including evidence gathering, reporting and action tracking.


• Implementation or oversight of personnel security controls in line with legal, regulatory, contractual and organisational requirements.Driving improvements to personnel security frameworks, governance arrange

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