Security Officer (relief)

Company: Mitie Group plc.
Apply for the Security Officer (relief)
Location: London
Job Description:

Job Overview

  • Protect customer property, people, and assets by providing security services in line with site Assignment Instructions (AIs).
  • Meet or exceed KPIs and SLAs through accountable, high-quality service that supports contract retention.
  • Undertake ongoing training and development to maintain and improve professional performance.

Main Duties

  • Provide security cover across various client sites, working flexible day and night shifts of 10 to 12 hours as required by operational needs.
  • Read, understand, and comply with all Assignment Instructions, Standard Operating Procedures (SOPs), Risk Assessments, and site-specific Security Instructions.
  • Protect client property, assets, infrastructure, and rolling stock from theft, vandalism, trespassing, anti-social behaviour, and other criminal activities.
  • Deter and prevent graffiti attacks on rolling stock and site facilities through proactive patrols and visible security presence.
  • Conduct regular internal and external patrols of premises, buildings, compounds, railway infrastructure, and perimeter boundaries in all weather conditions.
  • Monitor sites for suspicious activity, security breaches, safety hazards, or unauthorized access and take appropriate action in accordance with company procedures.
  • Maintain effective access control by verifying the identity and authorization of employees, contractors, visitors, and delivery personnel before granting entry.
  • Operate security systems, gates, barriers, and access control equipment to ensure site security is maintained at all times.
  • Respond promptly and professionally to alarms, incidents, emergencies, and requests for assistance, following established procedures and escalation processes.
  • Liaise with client representatives, contractors, emergency services, and members of the public in a professional and courteous manner.
  • Record and report all incidents, accidents, security breaches, and suspicious activity accurately using occurrence books, patrol logs, and incident reporting systems.
  • Carry out vehicle and personnel checks where required and ensure compliance with site security policies.
  • Identify and report security vulnerabilities, damaged infrastructure, faulty equipment, or health and safety concerns that could affect site operations.
  • Maintain a high standard of personal appearance, professionalism, and customer service while representing the company and client.
  • Ensure all duties are performed in accordance with company policies, industry regulations, and health and safety requirements.
  • Provide detailed handovers to oncoming security personnel to ensure continuity of operations and effective communication between shifts.
  • Remain vigilant at all times and contribute to maintaining a safe, secure, and controlled environment for staff, visitors, contractors, and client assets.

Training

  • Medical Assessment (which will include a stand alone drug & alcohol test)
    • You must pass a medical examination before the vetting process can begin.
    • If you fail the medical, your application will not proceed further.
  • Vetting / Screening
    • After passing the medical, the vetting team will carry out background and security checks.
    • You must successfully pass these checks to continue.
  • Work Safety Induction (WSI)
    • Once vetting is completed, you will attend the Work Safety Induction course.
    • This course must be passed before moving to the next stage.
  • Depot Track Awareness (DTA)
    • After completing the WSI, you will attend the Depot Track Awareness course.
    • This course must also be passed.
  • Pass Requirements
    • You are allowed up to 3 attempts to pass both the WSI and DTA courses.
    • If you do not pass within those 3 attempts, your job offer will be withdrawn (revoked).
  • In short: Medical > Vetting > WSI > DTA > Employment, with a maximum of three attempts to pass the WSI and DTA training courses.

What we offer

  • £14.80 per hour pay
  • Free Oyster travel card (London transport covered)
  • 12-hour shifts, including both day and night work (rotating or mixed schedule)
  • Mitie employee benefits package
  • Cycle to Work scheme (salary sacrifice for a bike, tax savings)
  • Virtual GP service (online doctor appointments)

What we are looking for

  • Previous Security Experience (including control room experience)
  • SIA License

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Posted: July 6th, 2026