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G4S
G4SPosted Closes in 28 days · 11 Nov 2026

Security Supervisor

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Location
HarwellOxfordshire

About the role

We are currently recruiting for an exciting opportunity to join our client's team in Harwell, as a Security Supervisor, working at a modern medical company in the area!

The role will be to cover all aspects of security, including patrols, access and egress control and to work with the wider security team to respond to incidents. If you have security experience and great customer service, then this will be a great fit for you.

Contract Information:

Pay Rate: £16.17 per hour
Hours: 24 hours contract - weekends only
Shift Timings: 07:00 to 19:00
SIA Licence: Door Supervisor or Security Guarding is essential.

The site is not accessible via public transport for the start and finish times, so you will need to have access to your own vehicle. You will need a manual driving licence.

Your Time at Work

As a Security Supervisor you will be responsible for:

- Follow all site procedures
- Conduct site patrols and device inspections
- Monitor CCTV and respond to alarms and incidents
- Act as the main security point of contact on weekends
- Write reports and respond to emails
- Conduct training and testing with staff members
- Maintain punctuality at all times
- Assist with shift coverage
- Report any issues with access control or doors
- Send out mass notifications during emergencies, as required

Our Perfect Worker

What we're looking for:

- You must be over the age of 18.
- A current Door Supervisor or Security Guarding SIA license is essential.
- Previous security experience is desirable, but not essential.
- Good communication skills, verbal and written.
- Strong IT skills.

Experience in a similar role required.

Key Information and Benefits

- 5.6 weeks paid holiday (8 of these will be in lieu of bank holidays - subject to shift pattern and accrual)
- Workplace pension scheme
- Life assurance benefit
- Financial support for SIA Licence & renewal
- Contributory Healthcare Scheme
- Eyecare vouchers
- Employee Discount Schemes
- Progression, training & development opportunities
- Referral Scheme
- Free uniform provided

Job Ref: 1G4S (G416)

G4S are a recognised Disability Confident Leader Employer, committed to fostering an inclusive workplace where everyone can thrive. They prioritise accessibility, support, and opportunity for all employees. Join their diverse and empowering team today!

About Staffline

Staffline are working in Partnership with G4S, providing a recruitment solution for security roles.

Please note that our job adverts are correct at the time of publication, but some details and job responsibilities are subject to change.

This job advert may not be copied, imitated or used, in whole or in part, by third-party websites, without prior written consent from Staffline.

Key details

Contract type
Permanent
Industry
Security
Trade
SIA
Job role
SIA Security Officer
Client
G4S
Posted
14 Oct 2026
Closes
11 Nov 2026
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