An experienced Site Electrical Test Engineer is required to support on-site testing, commissioning, and maintenance of transformers and associated equipment. This is a site-based role involving regular UK travel and occasional overseas work.Key ResponsibilitiesLead on-site transformer testing, commissioning, and fault diagnosisCarry out planned maintenance, repairs, and performance optimisationEnsure full compliance with RAMS, Health and Safety, and site regulationsAccurately complete test documentation, reports, and certificationRepresent the business professionally on customer sitesTravel across the UK and internationally as requiredTesting and CommissioningPerform electrical testing including: Insulation Resistance, HV/Applied Voltage, and HV WithstandTransformer Ratio, Winding Resistance and SFRAHV/LV CT testing and vector group verificationBushing testing (Tan Delta) and tapchanger checksConduct protection and functional testing: Relays (Buchholz, Oil Surge, Rupture Detector)OTI/WTI calibration and auxiliary equipment (PRDs, gauges, breathers)Complete system checks: Cooling systems, marshalling boxes, and control wiringOil sampling/analysis, impact recorder reviews, Ashridge setupInstallation and AssemblyCarry out mechanical installation of transformers and components: Radiators, conservators, cooling systemsBushings, tap changers, gaskets, sealsComplete electrical installation work: Wiring, termination, and control/protection systemsMarshalling boxes and cable systemsPe