Designs, assembles, tests, and commissions semiconductor metrology and EUV instrumentation. Responsibilities include creating mechanical models, detailed drawings, bills of materials, prototypes, and assemblies; coordinating procurement and vendors; specifying materials and manufacturing methods; supporting installation and service; evaluating prototypes; and conducting thermal, vibration, and stress analyses. The role collaborates with software, electrical, systems, physics, and manufacturing teams in a hands-on startup environment.