Thermal Systems Test & Validation Engineer (Power Electronics)

TL;DR

Thermal Systems Test & Validation Engineer (Power Electronics): Architecting and operating test infrastructure to validate thermal systems for grid-tied converters with an accent on thermal-fluids testing and automated test equipment. Focus on designing test rigs, executing data-driven validation loops, and driving root cause analysis for hardware failures.

Location: On-site in Scotts Valley, USA

Salary: $120,000 – $189,000 per year

Company

hirify.global is a startup building cutting-edge power electronics and scalable hardware solutions to accelerate the electrification of the power grid.

What you will do

• Execute thermal and fluids testing from component-level characterization to full system validation.
• Develop test plans and Design-of-Experiments (DoE) to turn hypotheses into crisp pass/fail criteria.
• Design and build test fixtures and rigs, integrating DAQs, sensors, and plumbing systems.
• Automate test execution, data logging, and post-processing to enable fast iteration loops.
• Lead root cause and failure analysis to isolate failure mechanisms and verify corrective actions.

Requirements

• Degree in Mechanical Engineering or related field with a background in thermodynamics or fluids engineering.
• Minimum 2 years of industry or research experience in a lab environment.
• Sound knowledge of flow physics, hydraulics, and heat transfer.
• Proficiency in Python or Matlab and experience with source control (Github/Bitbucket).
• Experience using DAQs and equipment such as thermocouples, flow sensors, and pressure sensors.
• Must be based in or able to work on-site in Scotts Valley.

Nice to have

• Simulation and modelling experience in CFD, thermal/RC, or fluid network analysis.
• Experience with commercial CAD packages.
• Background in reliability and statistical analysis.
• Experience with power electronics, high voltage testing, or UL certification processes.

Culture & Benefits

• Collaborative, enriching environment focused on personal, technical, and career growth.
• Dynamic, first-principles engineering culture with a strong bias toward hands-on execution.
• Competitive compensation package including salary and equity.
• Opportunity to work on high-impact hardware solving critical grid infrastructure problems.