IOTA Group has been supporting its clients for more than 40 years by providing specialized technical expertise for complex international projects, particularly in the energy and infrastructure sectors. A multidisciplinary engineering consultancy providing design, technical engineering, and project management services across infrastructure, energy, rail, and industrial sectors. It supports projects from concept and design through construction and commissioning. Context: To support electrical infrastructure projects in Switzerland, we are looking for a mid-level High Voltage Design Engineer. You will join an engineering team working on studies and design for electricity network operators. Responsibilities • Carry out engineering studies and contribute to the design of HV infrastructure: substations, cables or overhead lines, depending on your area of expertise. • Prepare technical documentation, including specifications, drawings, calculations and design reports. • Analyse client requirements and propose suitable technical solutions. • Collaborate with other engineering disciplines and coordinate technical interfaces. • Participate in design reviews and ensure the quality of deliverables. • Degree in Electrical Engineering or an equivalent qualification. • Experience in high-voltage engineering studies and design. • Expertise in at least one of the following areas: HV substations, HV cables or overhead lines. • Experience within an engineering consultancy, a network operator or an EPC contractor. • Experience on projects for Swissgrid or another transmission system operator would be an advantage. • English is required; French would be an advantage. • MEDIOR experience  Working Schedule : Resident 5 days per week  Starting date : 01/12/2026 Duration of the mission : 6 to 12 months