With over 140 years of Swiss engineering heritage, Sécheron Hasler Group is a global leader in high-power electrical and electronic equipment. Our solutions power railways, renewable energy, DC and AC networks, and industrial systems worldwide trusted for their precision, reliability, and innovation. Safety meets innovation in our Electrical Safety Solutions unit. From high-speed circuit breakers to voltage limiters, we engineer the components that protect critical infrastructure. Be part of a team where your work safeguards lives and powers progress. For the expansion of our team, we are seeking to hire in Geneva (Satigny) a dynamic and motivated Thermo-Mechanical R&D Engineer. Main tasks: You are in charge of the mechanical and thermal design development and validation of electro-mechanical components for DC medium voltage for the safety, protection and reliability of railway and renewable energy industries. You are in charge of multiphysics simulations, with emphasis on cooling / heat transfer. You are able to develop products from initial concept feasibility studies, perform finite element analysis, carry out prototyping as well as validation tests till certification and product launch. You manage industrialization, product improvements and existing product maintenance. Requirements Master or Bachelor in the field of mechanics, energy or electro-mechanical engineering. Experience developing complex systems involving different technologies (in particular thermal, mechanical, electrical, magnetic). Experience as a key player in inventing advanced concepts and solving critical issues. 2-3 years successful experience as a designer for electromagnetic devices, experience within the railway / power distribution industries is welcome. Experience testing and validating in accordance with international standards is an advantage. Fluency in French or English. Knowledge of 3D CAD modelling (Solidworks is an advantage). COMSOL experience is an advantage. Knowledge of finite element analysis (thermal, multi-physics, stress analysis). Knowledge of Reporting and technical documentation. Electro-magnetism knowledge would be an asset. Ability to work in a multidisciplinary team. Accurate, precise, with an appreciation of the importance of details. Cost and risk sensitivity. Benefits We foster flat hierarchies and direct communication, enabling quick decisions and strong collaboration across all levels. You’ll be trusted with real responsibility and encouraged to take initiative, with plenty of opportunities to grow both personally and professionally.