Site Security Controller

Lead & Govern: Maintain Facility Security Clearance (FSC) status and ensure ongoing compliance with MOD security requirements.
Manage & Protect: Coordinate physical security, personnel security and day-to-day governance, risk and compliance activities across designated sites.
Advise & Influence: Provide expert guidance to CGI management, colleagues, partners and contractors on UK Government security policies and protective security measures.
Assess & Improve: Interpret, implement and monitor security controls to safeguard classified assets and strengthen operational resilience.
Collaborate & Coordinate: Act as a primary security contact for external agencies and client Contracting Authorities, building effective relationships with key stakeholders.
Develop & Implement: Create, maintain and review Company Security Instructions (CSIs), ensuring alignment with government security standards, including GovS 007.
Investigate & Resolve: Report, investigate and support the resolution of security breaches, identifying lessons learned and opportunities for improvement.
Audit & Assure: Conduct security audits of secure programmes and support Government Industry Security Assurance (GISA) and Industry Personal Security Assurance (IPSA) requirements.
Design & Secure: Advise on new site acquisitions and facility developments, ensuring physical and electronic security requirements are incorporated into designs.
Support & Strengthen: Contribute to ISO 27001 Information Security Management and ISO 22301 Business Continuity Management certifications, crisis management exercises and security risk assessments.
Engage & Educate: Deliver security awareness communications, coordinate protective security training and promote consistent security practices across CGI.
Partner & Innovate: Work with Security Business Partners to identify emerging risks, improve security processes and embed effective controls throughout the organisation.

Required qualifications to be successful in this role: You will bring proven experience in a high-security environment, with a strong understanding of UK Government and MOD security requirements, physical security controls and security risk management. You will be confident interpreting complex security policies, advising senior stakeholders and translating regulatory requirements into practical, effective security measures. Your analytical approach, sound judgement and collaborative mindset will enable you to take ownership of security challenges while contributing to a supportive, continuously improving security function.
Essential experience and qualifications:
Degree-level education or equivalent professional experience within a high-security environment.
Extensive knowledge of UK Government and MOD security policies, frameworks and compliance requirements.
Previous experience as a Security Controller, Departmental Security Officer or in a comparable security governance role.
Strong understanding of Facility Security Clearance requirements and protective security measures.
Proven experience coordinating security governance, risk management and compliance activities.
Demonstrable experience conducting security investigations, compliance assessments and security audits.
Ability to interpret security policies, assess risks and implement appropriate protective controls.
Experience developing, implementing and maintaining effective security programmes.
Strong stakeholder management and communication skills, including the ability to advise senior management and external authorities.
Knowledge of relevant government security standards, including GovS 007.
DISA Security Controller training or qualification.
NPSA Security Training and Management Programme (STaMP) training.
CIDA certification or a sound understanding of Coordination and Installation Design Authority requirements.
Desirable qualifications and experience:
Professional certifications such as CISSP, CISM, CISA, CPP, PSP, CRISC or equivalent.
Knowledge of NIST security frameworks and ISO 27001 requirements.
Experience supporting ISO 22301 business continuity management standards.
Familiarity with GISA and IPSA assurance requirements.
Experience supporting secure facility design, security awareness programmes or crisis management exercises.
Skills: Communication
Security Analysis
Stakeholder management

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK 'Best Employer' by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go.
Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a hybrid position therefore 4 days in office one remote. to be based near Reading or Leatherhead
Due to additional programme security requirements, applicants must be British nationals and hold, or be eligible to obtain, high-level UK Security Clearance.
Your future duties and responsibilities: In this role, you will take ownership of day-to-day security governance, risk and compliance across CGI sites, ensuring our people, facilities and classified assets remain protected in line with UK Government and Ministry of Defence requirements. As a trusted security advisor, you will work closely with CGI leadership, security teams and external authorities to maintain compliance, manage security risks and support the successful delivery of secure client programmes.
You will have the opportunity to influence security arrangements for new and existing facilities, develop practical improvements and strengthen security awareness across the business. Supported by a collaborative network of security professionals, you will help embed a proactive security culture that enables CGI to deliver critical services with confidence., What you can expect from us: Together, as owners, let's turn meaningful insights into action.
Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because...
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.
Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.
Come join our team-one of the largest IT and business consulting services firms in the world.