In this Mechanical Test System Engineer role, you will: - Lead the design and implementation of mechanical subsystems for custom sensor test stations, including fixtures, motion assemblies, enclosures, and mechanical interfaces - Own the end-to-end mechanical design lifecycle: concept → CAD → DFM → prototype → validation → bring-up - Collaborate closely with cross-functional partners to ensure seamless integration across mechanical, electrical, and software components - Write and maintain control and automation software to operate motion systems, collect data, and interface with test instrumentation - Drive on-site fixture debug, bring-up, and validation at global manufacturing facilities - Continuously optimize test systems for reliability, cycle time, precision, and serviceability - Build broad technical expertise and develop toward test architecture leadership, influencing the direction of future test platforms