Diagnosis, troubleshooting, and fault finding on large industrial diesel engines across the Sandvik fleet, with a primary focus on Volvo engines (However can work on other OEM brand such as Cummins, Deutz etc), using OEM diagnostic software, electronic engine control data, fault codes, schematics, and service manuals. Perform scheduled and preventive maintenance, inspections, and service on Sandvik underground equipment (loaders, trucks, development and production drills, bolters) and surface equipment (Surface top hammer, rotary and DTH drill rigs) in line with OEM specifications and customer maintenance plans.