Commercial Gas EngineerSurrey / High Wycombe / M25 Corridor Our clientOur client is a UK-based engineering services provider specialising in commercial gas, HVAC and building services maintenance across multi-site commercial portfolios. The business delivers full lifecycle support including service, maintenance, reactive repairs and compliance-led engineering solutions across large commercial estates. Their engineers support a diverse range of environments including logistics, retail, commercial premises and distribution facilities, providing reliable and high-quality technical services across long-term contracts. We’re looking for experienced Commercial Gas Engineers to join a growing team delivering high-quality reactive and planned maintenance across multiple commercial contracts covering sites in and around the M25. This isn’t just another service role — it’s about solving problems properly, identifying root causes, and being the trusted technical expert customers rely on. The RoleYou’ll be responsible for carrying out reactive and planned maintenance across commercial gas systems, ensuring permanent solutions rather than temporary fixes. Your day-to-day will include: Completing scheduled PPM tasks to agreed SOPs and service levels Responding to reactive callouts within agreed timeframes Fault finding, diagnostics and root cause analysis on commercial gas systems Servicing, maintaining and repairing commercial boilers and associated plant Advising customers and account managers on required repairs and improvements Maintaining high workmanship standards — clean, professional and compliant Updating PDA systems and service reports in real-time Managing van stock to maintain a high first-time fix rate Ordering parts and liaising with the Service Desk when required Identifying remedial works and supporting quotation processes You’ll work independently across multiple sites while maintaining strong communication with customers and internal support teams. Skills & Experience Proven experience as a Commercial Gas Engineer within commercial environments Valid Commercial Gas qualifications (COCN1 or equivalent) Strong fault-finding and diagnostic ability Experience working across multi-site service contracts Knowledge of HVAC plant and associated systems advantageous Ability to work independently without direct supervision Strong communication skills and customer-facing confidence Professional attitude and appearance Full UK Driving Licence Salary & PackagePlease call Tom on (phone number removed) for more information and please apply to this advert to prompt a call back. Up to £50,000 basic salary Field-Based Role ( Inside M25 coverage) Company Van Provided Pension Scheme On Call Rota £290 Call Out Payment Overtime Opportunities Company Benefits Package