Field Service Engineer – Rail HVAC & Mechanical Systems Location: Derby-based with UK travel Salary: £35,000–£45,000 + van + overtime Sector: Engineering | Rail | Field Service Take your technical skills on the road — and be part of a growing team that’s investing in people, tools, and service excellence. We’re looking for a Field Service Engineer to support rail HVAC and mechanical systems across UK client sites. This mobile role blends hands-on diagnostics with customer-facing service delivery, backed by a well-established Derby-based engineering firm that’s expanding fast. Why This Role? You’ll be the face of a trusted engineering team, delivering technical solutions where they matter most — on-site, on time, and to spec. With investment in training, tooling, and nationwide service capability, this is a role where your autonomy is respected, and your expertise valued. What You’ll Be Doing * Conducting on-site diagnostics, repairs, and maintenance of rail HVAC/mechanical units * Liaising with clients and internal teams to ensure high service standards * Completing documentation and upholding safety protocols * Travelling to client sites across the UK (with occasional overnight stays) * Supporting workshop operations when required What You’ll Bring * Strong background in HVAC or mechanical engineering * FGAS certificatio...