Design mechanical components, modules, and assemblies for compact fuel cell stacks and systems. Create 3D models, detailed drawings, and GD&T documentation; apply DFM/DFA principles; support prototyping, validation, manufacturing, and tooling; collaborate with suppliers and cross-functional engineering teams; and maintain BOMs, drawings, and engineering changes in PLM. The role is full-time and on-site in Nyon, Switzerland, with relocation required.