Fire and Security Service Engineer

Trinity Fire & Security Systems
London
Service Engineer - Fire & Security Systems (Fire alarm, CCTV, Access Control, Intruder Alarm)
Location: London + surrounding area
On-target earnings: £58,000 (Inclusive of overtime, call-outs, travel pay, and bonuses)
£4,000 sign-on bonus

Trinity Fire & Security are looking for an experienced Service Engineer to join our growing team, delivering high-quality servicing and maintenance across a diverse client portfolio.

You’ll be responsible for servicing, maintaining, and supporting a range of fire and security systems, ensuring full compliance and optimal performance. Working regionally, you’ll benefit from structured support from dedicated service coordinators and technical specialists—so you can focus on what you do best.

Why Trinity?
  • Regional work - less time travelling, better work-life balance.

  • Uncapped earning potential - enhanced overtime, commission, and call-out pay.

  • Ongoing manufacturer training with leading brands.

  • Clear career progression - we invest in long-term development.

Systems you'll work with:
  • Fire : Gent, Notifier, Advanced, Protec, and other open protocol systems

  • CCTV : HikVision, Dahua, Avigilon

  • Intruder : Galaxy, Texecom

  • Access Control : Paxton, Honeywell, Gallagher

Key responsibilities:
  • Carrying out planned preventative maintenance and reactive service calls across fire and security systems.

  • Diagnosing faults and delivering effective, compliant solutions.

  • Completing minor remedial works and small installations.

  • Providing clear technical feedback and updates to customers.

  • Maintaining accurate service records and documentation.

What you'll bring to the role:
  • Proven experience servicing fire alarm and/or electronic security systems.

  • Strong fault-finding and diagnostic skills.

  • Good working knowledge of relevant British Standards.

  • Confident communication and customer-facing ability.

  • Electrical safety awareness (ECA or equivalent) and solid technical understanding.

What Trinity Offers
  • Competitive base salary with uncapped commission and paid overtime .

  • 23 days’ holiday , increasing with service, plus bank holidays.

  • Company vehicle and fuel card.

  • Employee Discount Programme – savings across 800+ retailers.

  • Pension via Royal London , Life Assurance , and Employee Assistance Programme .

  • Referral bonus of up to £2,000.

  • Ongoing training and career development opportunities.

Equal Opportunities in Practice

We are committed to equality of opportunity for all staff and applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief and marriage and civil partnerships.

Security Vetting

It is an industry requirement that successful candidates undergo security vetting. Offers of employment are subject to satisfactory vetting and may be withdrawn if the required standards are not met.

Ind1

Posted 2026-04-22

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