Systems Engineer

G4S
Barnet, Greater London
Location: North West London

Salary: Up to £40,000

We are seeking an experienced Fire & Security Service Engineer to join our North West London team. You will be located remotely so you will need to be within easy travelling distance to the area.

What You Will Doing

Attend to calls for maintenance (on site and or by telephone) as directed by team co-ordinators

Rectify all faults on the first visit where rectification is within your control.

Carry out rolling programme of preventative maintenance visits.

Collection/recording of site configuration information.

Maintain car stock (spares) levels.

Maintain accurate and timely records.

Provide cover on an out of hour’s basis on a rotating basis.

Commission small projects when required.

Ensure that audits are carried out of quality procedures.

Provide training to customers and colleagues as required.

Carry Out Any Additional Tasks That May Be Required

What we are looking for

Previous electrical mechanical experience

Experience installing & servicing a wide product base of access control systems, CCTV systems and intruder alarm systems.

Experience of servicing fire alarm systems, ideally GENT based.

An IT qualification and or Electrical/Electronic qualification

A broad technical IT knowledge, i.e. Installing various Windows Operating Systems; networking etc

Knowledge of basic electrical principals such as measuring voltage and current drain

Good attention to detail in order to ensure that all paperwork is correctly completed, and procedures are followed within the allotted timescales.

An enthusiastic team player who is able to work well under pressure and maintain a professional approach at all times

Please note this position will require completion of the Security Screening process.

Compensatory Benefits

Salary of up to £40,000

Company Car/Van

Workplace pension scheme

Life assurance benefit

Contributory Healthcare Scheme

Eyecare vouchers

Employee Discount Schemes

Progression, training & development opportunities

Refer a friend scheme

You will just need to complete the following application form and one of our Recruiters will be in touch to discuss the next steps. Our recruitment and selection process will include an interview and screening to BS7858 standards.

Given the nature of the industry, we do need to ask some questions for security and compliance purposes, but don’t worry - you will only need to complete them once.

In 2021, G4S, a London-based global security company, was acquired by Allied Universal, a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security solutions. This acquisition expanded Allied Universal’s footprint and infrastructure on a global and local level. Through a global workforce of approximately 800,000 people*, we leverage best practices in communities all over the world. With revenue of approximately $20 billion, we have the resources to deploy efficient processes and systems to help deliver our promise locally: keeping people safe so our communities can thrive. In Europe, we have an extensive network of offices and more than 46,500 employees to support our local communities and customers. We believe there is no greater purpose than serving and safeguarding customers, communities and people in today’s world. Allied Universal is There for you. For more information, please visit or

  • Total workforce includes employees and subcontractors
Posted 2025-08-10

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