Relief Security Officer

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Relief Security Officer

Location: Liverpool & Surrounding Areas

Pay Rate: £12.21 per hour

Contract Type: Flexible/Relief

Are you reliable, adaptable, and passionate about keeping people and property safe? We\’re looking for a committed Relief Security Officer to join our team, covering key government sites across Liverpool and the surrounding area.

This is an ideal opportunity for someone with a flexible schedule who thrives in varied environments. You\’ll step in to cover planned and unplanned absences — including holidays, sickness, and short-notice requirements — making you an essential part of our frontline defence.

About The Role

As a Relief Security Officer, your core mission is to protect people, property, and sensitive assets by delivering high-quality security services in accordance with site-specific Assignment Instructions (AIs). You\’ll play a crucial role in maintaining site safety, responding to incidents, and ensuring all security operations run smoothly.

You\’ll need to be confident working independently and across a variety of shift patterns including days, nights, and weekends.

Key Responsibilities

Operational Excellence

• Follow all Assignment Instructions (AI\’s) and maintain familiarity with updates and changes.
• Maintain a strong presence on-site to deter threats and manage incidents efficiently.
• Collaborate with on-site teams to meet Key Performance Indicators (KPIs) and Service Level Agreements (SLAs).
• Adhere to legal, regulatory, and contractual obligations — including wearing a valid front-line SIA license and, where required, a CCTV PSS License.

Training & Development

• Complete all required competency and site-specific training.
• Undertake additional training as directed to support ongoing development and compliance.
• Stay up to date with security technologies and industry best practices.

Safety & Incident Response

• Remain alert to potential threats, hazards, or suspicious activity and act quickly and appropriately.
• Complete detailed incident reports and maintain accurate notebooks.
• Follow all Health & Safety protocols and support the safe, secure operation of the site.
• Make check calls and emergency notifications in line with procedure.

What We\’re Looking For

• Valid SIA License (Security Guarding or Door Supervision)
• SC Clearance – desirable (or ability to undergo vetting)
• Previous security experience (ideally in a government or high-security environment)
• Strong communication and observational skills
• Calm under pressure and professional in challenging situations
• A flexible and dependable work ethic

Why Join Us?

• A vital role with real responsibility and purpose
• Ongoing training and career development
• A chance to make a difference, every shift
• Work in high-profile environments that value your skills

Be part of something meaningful. Apply today and become a key player in our security team at Mitie — where your presence matters.

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!

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.

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 .

Since 1987, Mitie’s 72,000 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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