Field-Based Senior Fire Safety Engineer – London

Harmony Fire Ltd.; Greater London; On-site; GBP 52,000 - 62,000; Full time

Benefits offered by this job

Company vehicle

Personal development plan

Unlimited holiday

Bonus scheme (up to 50% of annual pay)

Lunch and snacks daily

Team social budget

Cycle to work

Pension (auto-enrolment)

Company events

European mini-breaks

Job summary

Harmony Fire Ltd. is seeking a Senior Fire Engineer to join the Service Delivery team, covering London and the M25 corridor.

You will lead on-site maintenance, inspections, and commissioning of fire safety systems across diverse clients, ensuring highest technical and quality standards on every visit. You will act as the senior technical point of contact, guiding junior engineers, maintaining equipment, and delivering compliant documentation while liaising professionally with clients.

Qualifications

• Experience maintaining, servicing, and commissioning fire alarm systems and emergency lighting to BS 5839/BS 5266.
• Strong fault-finding and diagnostic skills for complex system issues.
• Proven on-site senior engineering capability with client-facing responsibilities.

Responsibilities

• Carry out maintenance, call-outs, and commissioning of fire safety systems across London and M25.
• Produce compliant service records and certification documents.
• Diagnose faults quickly to minimise downtime and inform clients.
• Lead on-site as senior engineer and provide technical guidance.
• Maintain van stock, test equipment and tools.
• Communicate findings and next steps to clients.
• Log all job entries accurately in the system.
• Participate in out-of-hours emergency rota.

Skills

A-player mindset

Fire safety systems maintenance

Fault finding & diagnostics

BS 5839/BS 5266 knowledge

On-site senior engineer leadership

Strong communication

Full UK driving licence

FIA/ECS qualification

Job description

Harmony Fire Ltd. is seeking a Senior Fire Engineer to join the Service Delivery team, covering London and the M25 corridor.

You will lead on-site maintenance, inspections, and commissioning of fire safety systems across diverse clients, ensuring highest technical and quality standards on every visit. You will act as the senior technical point of contact, guiding junior engineers, maintaining equipment, and delivering compliant documentation while liaising professionally with clients.