Mobile HVAC Engineer (Nights) - London Underground Stations Position Type: Temporary / Ongoing Contract Location: Mobile across London Underground Station Network Pay Rate: £25.00 - £28.00 per hour (Weekly pay) Shift Pattern: 4 on, 4 off Hours: 19:00 - 07:00 (12-Hour Night Shifts) Start Date: Immediate / ASAP About the Role We are recruiting an experienced Mobile HVAC Engineer for an ongoing temporary night-shift contract covering London Underground tube stations across Greater London. Working a steady 4-on, 4-off night shift rota (7:00 PM - 7:00 AM), you will be responsible for carrying out scheduled maintenance, inspections, and emergency repairs on critical heating, ventilation, and air conditioning systems across station plant rooms, back-of-house areas, and operational spaces during track/station engineering hours. Key Responsibilities Undertake planned preventative maintenance (PPM) and reactive repairs on HVAC/R plant across multiple tube stations. Service and troubleshoot VRF/VRV systems, split systems, chilled water systems, and air handling units (AHUs). Carry out refrigerant leak checks, recoveries, and logbook updates in strict accordance with F-Gas regulations. Attend to urgent environmental and mechanical breakdowns across assigned network locations. Comply fully with London Underground infrastructure protocols, site access procedures, and health and safety standards. Candidate RequirementsEssential: Technical Qualification: NVQ / City and Guilds ..... full job details .....