Job Title: HVAC / Building Services Engineer Location: Hertfordshire, North London & surrounding areas (occasional travel to Essex and Ipswich) Salary: £45,000 per annum + benefits Overview: We are seeking an experienced HVAC / Building Services Engineer to join a well-established engineering services company. The successful candidate will be responsible for the maintenance, service, and repair of HVAC and mechanical systems across a variety of commercial sites. Hours: 8:00am – 5:00pm, Monday to Friday (many clients are not on site for access at 7am). Key Responsibilities: * Carry out PPM, reactive maintenance, and fault-finding on HVAC and building services systems. * Service and maintain air handling units, fan coil units, split systems, and associated controls. * Diagnose and repair mechanical plant, heating, and ventilation systems. * Ensure all work is completed to a high standard and in compliance with relevant health & safety regulations. * Complete service reports and maintain accurate documentation. * Communicate effectively with clients and provide excellent customer service. Requirements: * Proven experience in HVAC, mechanical, or building services engineering. * NVQ / City & Guilds Level 2 or 3 in Mechanical Engineering, Air Conditioning, or Plumbing & Heating. * F-Gas certification (preferred)...