Mitie Cleaning & Hygiene Services
Site Protection Supervisor
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Site Protection Supervisor
📍 Location: Wokingham and Reading area, Berkshire.
💷 Pay Rate: £18.00 per hour.
🕒 Shifts: 12-hour rotating 4 on / 4 off shift pattern, consisting of 2 days & 2 nights, then 4 days off.
About Our Client
We are the National Energy System Operator (NESO) — an independent, impartial, and expert organisation at the centre of Great Britain's energy system. We are driven by collaboration, innovation, and a shared purpose: to ensure everyone has access to clean, affordable, and reliable energy.
At NESO, we value inclusivity, diversity, and belonging. We build strong relationships, empower one another, and ensure every voice matters. Together, we are shaping the future of energy and supporting communities across the nation.
About The Role
As a Site Protection Supervisor, you will play a critical role in leading security operations within a Critical National Infrastructure (CNI) environment.
This is a position of responsibility and leadership, where you will oversee the delivery of security services, manage incidents, and ensure the highest standards of safety, compliance, and professionalism are maintained at all times.
You will act as the key operational lead on shift, supporting and directing officers, making decisions in real time, and ensuring that site security remains effective, resilient, and compliant.
Key Responsibilities
- Supervise and coordinate day-to-day security operations across all site functions
- Lead and direct incident response, ensuring effective control, escalation, and resolution
- Maintain real-time situational awareness and proactively identify risks or vulnerabilities
- Oversee access control processes, ensuring compliance with site security procedures
- Monitor CCTV, alarm systems, and control room activities
- Manage and support Site Protection Officers, ensuring performance, conduct, and professionalism
- Ensure all incidents, activities, and system faults are accurately recorded and reported
- Deliver structured briefings, handovers, and operational updates
Why This Role Matters
- You will lead security operations protecting critical infrastructure supporting the UK's energy system
- Your decisions will directly impact site safety, resilience, and operational continuity
- You will operate in a high-security environment requiring strong leadership and accountability
What We're Looking For
We are seeking experienced and capable security professionals with strong leadership skills.
Essential Requirements
- SIA Front Line Door Supervisor & CCTV Operator License.
- Proven experience in a supervisory role within security.
- First Aid at Work qualification (or willingness to obtain).
- Full UK Manual Driving License.
- British citizen with a UK Passport or hold dual Nationality.
- Lived and worked in the UK for the past 5 years.
- Minimum of 3 GCSEs including English and Maths at grade C/4 or above (or equivalent).
- Experience managing incidents and leading teams.
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Highly Desirable
- Experience within government or critical infrastructure environments.
- SC Clearance - must be obtained as a condition of your employment.
- Experience using systems such as CCTV, access control platforms and incident reporting tools.
Skills & Capability
- Fluent in verbal and written English with excellent communication and interpersonal skills.
- Strong leadership and team management skills.
- Good knowledge of security operations, CCTV, access control, and incident response.
- Ability to manage conflict and make decisions under pressure.
- Competent in report writing and incident documentation.
- Strong working knowledge of health & safety and compliance requirements.
- Excellent IT skills and a good understanding of all MS Office applications.
Personal Attributes
- Confident leader with the ability to motivate and guide others.
- Professional, disciplined, and accountable.
- Calm and decisive in high-pressure situations.
- Strong attention to detail.
- Approachable and supportive management style.
- High level of integrity and discretion.
About You
You will be an experienced security professional with the ability to lead from the front. You will be confident in managing people, handling incidents, and making decisions in a fast-paced environment.
You will demonstrate strong leadership, professionalism, and the ability to maintain control and composure in challenging situations.
Training & Development
You will receive structured site-specific training and ongoing development, including:
- Operational procedures and security protocols
- Security systems (CCTV, access control, alarms)
- Conflict management and de-escalation techniques
- Fire safety and First Aid
- Ongoing professional development and career progression within Mitie
Pre-Employment Requirements
All successful candidates will be required to complete:
- Fitness medical (including eyesight, hearing, and fitness test)
- Drug and alcohol screening
- Security vetting and clearance (SC)
What To Expect
Our recruitment process is fair, transparent, and based on merit. It is designed to assess your suitability against the requirements of the role at each stage.
To be considered, applicants must successfully complete each stage of the process outlined below:
- Eligibility Screening: You will be required to complete a series of eligibility questions to confirm that you meet the minimum requirements for the role. Successful candidates will progress to the application stage.
- Application & Situational Judgement Test (SJT): You will complete an application form, including role-specific questions and a Situational Judgement Test (SJT). The SJT assesses your responses to workplace scenarios and behaviours relevant to the role. A minimum pass mark must be achieved to progress.
- Application Sift: Your application will be reviewed against the role criteria to determine suitability for the next stage.
- Virtual Interview: Successful candidates will be invited to attend a virtual interview to further assess skills, experience, and behaviours.
- In Person Pre-Employment Checks: This stage includes:
- Competency test (including eyesight, hearing, and fitness test)
- Drug and alcohol screening
- Security vetting and clearance (SC)
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Please note that you must successfully pass each stage to progress to the next.
Our Benefits
Our market-leading flexible benefits scheme provides you with benefits that suit your lifestyle.
- We have a virtual GP on hand for you and members of your household. So you can get expert advice by video or phone without having to leave your home.
- We offer financial wellbeing assistance through our Salary Finance scheme. For example, you could access 50% of your earned pay before payday for a small fee. Salary Finance also offers competitive loans.
- When you join us, we’ll give you a link to our flexible benefits platform, Choices. This gives you the chance to customise your benefits to best suit your lifestyle. You can choose from dental insurance, dining cards, coffee clubs, buying technology products at an affordable cost and much more!
- We give you access to high street discounts from thousands of well-known retailers, gyms and more through our MiDeals platform. And we have a cycle-to-work scheme.
- Life cover is the greater of your equivalent annual salary or a minimum of £10,000 - giving peace of mind for your dependants. We also offer a save-as-you-earn scheme, and a Mitie Matching Share Plan (you could even be awarded free shares in Mitie).
- We award our employees with Mitie Stars as recognition for their hard work. There are cash prizes up for grabs each month and at the end of the year there’s a chance to scoop a top prize of £10,000!
Career Development
Our success is a direct result of the experience and quality of our people. Progressing your career is therefore a top priority for us. We offer a diverse variety of training and development avenues via a wide selection of learning resources to suit you.
Inclusive Recruitment
We are committed to ensuring our recruitment process is inclusive and accessible to all. If you have a disability or long-term condition (for example dyslexia, anxiety, autism, a mobility condition or hearing loss) and need us to make any reasonable adjustments, changes or do anything differently during the recruitment process, please let us know by emailing at.
About Mitie
Since 1987, Mitie’s 84,000 employees have been maintaining companies globally. We are the UK’s leading facilities management and professional services company, and our clients range from household names in banking, critical government sites as well as hospitals and schools.
Join our Mitie Team.
Together our diversity makes us stronger.
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