Job Title: HVAC Field Service Engineer - Rolling Stock Location: Field-based - South Wales, London, Yorkshire and surrounding areas Contract Length: 12 months minimum, with strong potential for extension Hours: 40-50 per week Rate: £30-£40 per hour (Umbrella, DOE) Overview: We're looking for an experienced HVAC Field Service Engineer to support maintenance and fault-finding on HVAC units across various rolling stock fleets. The role is field-based and will involve travel across key sites in South Wales, Yorkshire, London, and locations in between. This is an expanding project, initially focused on the new deep tube stock, with scope for long-term work. Key Requirements: Proven experience in HVAC maintenance and fault-finding (essential) Rolling stock experience preferred - other sectors considered NVQ Level 3 or equivalent in an engineering discipline Full UK driving licence (essential) F-Gas certification (preferred) Experience working in depot environments (desirable)