Operate and maintain custom test rigs, execute experiments, analyze performance data, investigate anomalies, and recommend corrective actions. Improve test reliability, calibration, throughput, automation, and documentation. Support prototype builds and materials trials, with opportunities to contribute to CAD, fixture design, fabrication, and rapid prototyping. The role requires hands-on lab work, troubleshooting, detailed record-keeping, and independent problem-solving in an HVAC climate-technology startup.