Senior Security Officer

Site Security Supervisor

Better places, thriving communities.
The Site Security Supervisor will report to the Regional Security Operations Manager and will be responsible for leading security operations at the designated client site, ensuring a safe and secure environment for personnel and assets.

• Manage daily security operations.
• Supervise and support on‑site security teams.
• Conduct patrols, CCTV monitoring and monitoring of access points.
• Handle incidents, complete incident reports and follow the correct escalation process.
• Co‑ordinate emergency response including lock down, alarm responses and evacuation procedures.
• Enforce health and safety procedures for staff, visitors and occupants.
• Use electronic systems for site patrolling and CCTV monitoring.
• Disseminate assignment instructions, risk assessments, standard operating and emergency procedures.
• General day‑to‑day rostering, post management and visits.
• Issue and monitor personal protective equipment and equipment.
• Provide training for staff.
• Coordinate access control and gate outage response.
• Report and monitor faults.
• Coordinate with police – reporting and investigating incidents.
• Provide operational cover as required to support the security team on site.
• Control and monitor access for visitors, contractors and deliveries.
• Manage the car park enforcement procedures and parking arrangements for large events.
• Conduct Return to Work and Absence Follow Up interviews.
• Monitor staff attendance and ensure posts are fully covered.
• Assist management with investigations and discipline processes.
• Take minutes during meetings.
• Conduct staff performance reviews.
• Perform any other related security duties as instructed by Mitie management.

• Site supervisory experience (essential).
• Strong leadership and decision‑making skills in high‑pressure situations.
• Excellent communication skills, both verbal and formal.
• Pro‑active approach to learning and development.
• Ability to manage a varied workload with attention to detail.
• Basic IT knowledge.
• Counter Terrorism (CT) level clearance NPPV L2 or SC clearance.
• Successful vetting checks as per BS7858 and BS 7499.
• Valid SIA licence for guarding/door supervision and CCTV licence.
• Flexibility to work a rolling roster including days, nights, weekends and bank holidays.

Mitie offers a flexible benefits scheme that includes a virtual GP, financial wellbeing assistance through a salary finance scheme, competitive loans, a cycle‑to‑work scheme, high‑street discounts through the MiDeals platform, life cover at least £10,000, a set‑as‑you‑earn scheme, a Mitie Matching Share Plan and opportunities to earn Mitie Stars rewards. Training and development resources are provided to support career progression.

Mitie is an equal opportunity employer and encourages applicants from all backgrounds to apply. If you need reasonable adjustments due to a disability, please let us know.