System Integration Engineer (Thermal & Fluid Systems)

TL;DR

System Integration Engineer (Thermal & Fluid Systems): Designing, building, and operating test infrastructure to validate thermal systems for grid-tied power converters with an accent on the full development lifecycle from design review to root cause analysis. Focus on executing physical tests, developing automated test equipment, and creating data workflows to ensure system reliability and performance.

Location: On-site in Scotts Valley, CA

Salary: $120,000 – $189,000 per year

Company

hirify.global is a startup building cutting-edge power electronics to accelerate the electrification of the energy grid.

What you will do

• Execute thermal and fluids testing from component-level characterization to full thermal-system validation.
• Design and build test fixtures, rigs, and integrate DAQ equipment including thermocouples, pressure sensors, and flowmeters.
• Size and integrate plumbing for support equipment such as chillers, pumps, and reservoirs to enable repeatable testing.
• Automate test execution, data logging, and post-processing to enable fast iteration loops.
• Drive root cause and failure analysis to isolate mechanisms and validate corrective actions with design engineering.

Requirements

• Degree in Mechanical Engineering or related field with a background in thermodynamics or fluids engineering.
• 2+ years of industry or research experience in a lab environment with proven hands-on experience in testing and fixtures.
• Sound knowledge of flow physics, hydraulics, and thermal/heat transfer.
• Proficiency in scripting with Python or Matlab and experience using Github or Bitbucket.
• Experience with various DAQs and sensors (thermocouples, flow, pressure, anemometers).
• Ability to write detailed technical reports and perform basic engineering calculations.

Nice to have

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

Culture & Benefits

• Competitive compensation package including salary and equity.
• Collaborative, enriching environment focused on personal and technical growth.
• Dynamic workplace driven by first principles engineering and a bias toward hands-on execution.