We’re seeking an experienced Senior Air Conditioning Service & Maintenance Engineer to join a growing mechanical services team based in the Sheffield area. The role involves working on a variety of commercial and industrial projects, supporting both local and national clients across multiple sectors. You’ll be responsible for servicing, maintaining, and repairing a wide range of HVAC systems and associated equipment, while upholding the highest standards of safety, quality, and compliance. Occasional overnight stays when working on national accounts. Key Responsibilities * Service, maintain, and repair air conditioning and refrigeration systems including: * Split systems, VRV/VRF, CRAC systems, chillers, cold rooms, AHUs & ventilation units. * Carry out fault finding, diagnostics, and system performance testing. * Ensure compliance with F-Gas, ISO, and H&S regulations at all times. * Support junior engineers and uphold company quality standards. * Complete all documentation via tablet/iPad for electronic job reporting. What We’re Looking For * F-Gas Category 1 certification (or equivalent). * 5–10 years’ experience in air conditioning and refrigeration service & maintenance. * Full UK driving licence and CSCS card. * Strong communication skills, a proactive attitude, and a professional approach. * Desirable: NVQ Level 3 in Air Conditioning & Refrigerati...