Join a forward-thinking engineering team in Germiston, working with advanced lithium battery systems powering underground mining locomotives. This opportunity suits a skilled, hands-on Electrical Field Service Technician who is comfortable in site-based, underground environments and takes pride in diagnosing complex electrical faults while keeping equipment running at its best. Education & Skills: BEng / BSc in Electrical or Electronic Engineering 3+ years experience in power electronics design or product support Strong understanding of medium‑ to high‑power conversion systems Experience with simulation tools, such as MATLAB/Simulink, LTspice, or PSpice Practical experience with testing and troubleshooting power electronic hardware Solid understanding of thermal management, EMC, and protection schemes Job Experience & Skills Required: Design and development of high‑power converters and inverters for renewable energy and energy storage systems Support the lifecycle of grid‑connected solar PV inverters, battery converters, and related power electronics products Develop and review power stage designs, including DC/DC, DC/AC, and AC/AC topologies Selection and validation of power semiconductor devices (IGBTs, MOSFETs, and SiC) Perform circuit simulation, control loop analysis, and performance optimisation Support factory and site testing, commissioning, and fault investigation Work closely with control, systems, and commissioning engineers Ensure compliance with electrical standards and grid‑code requirements Apply now!