Fire & Security Engineer Jobs UK

Fire and security engineers install, commission, and maintain life safety and security systems in commercial buildings — fire detection and alarm systems (BS 5839-1), suppression systems, emergency lighting, CCTV, access control, and intruder detection. Work is typically split between planned preventive maintenance (PPM) visits and reactive call-outs.

Qualifications: BS 5839-1 Level 3 is the benchmark qualification for fire alarm engineers in commercial FM. Many contracts also require FIA membership or NSI/SSAIB certification at company level. Security engineers working on CCTV and access control increasingly need SIA licensing. Sprinkler and suppression engineers typically hold FHC (Fire Hydrant Certification) or LPCB accreditation.

Salary benchmarks: Experienced fire and security engineers earn £32,000–£48,000. Senior roles on critical infrastructure contracts — data centres, hospitals, and government buildings — pay £50,000–£65,000+. Engineers holding both fire alarm and security systems competencies command a premium over single-discipline specialists.

See our BS 5839-1 Level 3 certification guide for current exam costs, approved providers, and the route to qualification. See also our 2026 FM salary guide for full benchmarks across all experience levels.