Senior Security Officer
Posted on November 10th, 2025
London
£ per hour
Type of Job: Permanent
We are currently recruiting for Senior Security Officer's to join our team on a well know Government contract, based in Westminster!
Currently, we are looking for someone who has previous Supervisor experience and is able to work in a fast paced environment, being able to support a team and also meet client requirements at all times. Your role will be to be there for a point of escalation and to support the Operations management team when events take place on site, or when security incidents need to be investigated.
This position is a full time contract, working 42 hours per week. This will be over a 4 on, 4 off shift pattern covering shifts Monday to Sunday. This will also be on a day and night shift rotation.
The rate of pay for this role is £ per hour.
We do require the successful candidate to hold a valid SIA Security Guarding or Door Supervisor license.
Please be aware that this position will require a SC Clearance (set by the Government), so you will be asked questions in regards to this in a telephone interview to ensure you meet the requirements.
Your Time at Work
As a Senior Security Officer, you will be responsible for:
- Physical Security, protection of client assets and people.
- Assist and support training needs to ensure they are identified and appropriate training & development is delivered.
- Operationally support the DM in the delivery of the agreed service levels.
- Assist with monthly audits on all Security practices and process, which includes AIs and PIs.
- Support in the delivery of Post Instructions across the security team at the FCDO
- Provide Operational support and act as a point of contact out of hours if and when required.
- Assist in maintaining compliance with all Health & Safety legislation.
- Assist and be a point of contact for Incident Management, ensuring that incidents are correctly managed and escalated as per client specifications.
- Ensure the security team is rostered and all holidays are applied for and submitted to the DM within the guidelines
Our Perfect Worker
You will need to be aged 18 or over, a confident communicator who is a team player with the drive to provide a friendly and professional service at all times. Good IT knowledge is also key.
Previous Security Supervisor experience is essential.
You will need to hold a valid SIA Security Guarding or Door Supervisor license.
Key Information and Benefits
- Earn £ per hour
- days per year
- Workplace pension scheme
- Life assurance benefit
- Contributory Healthcare Scheme
- Eyecare vouchers
- Employee Discount Schemes
- Progression, training & development opportunities
- Refer a friend scheme
- Free uniform provided
- Onsite Gym and Multi-Faith Prayer Facilities
Job Ref: 1ALS (L4)
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.