Test Technician

JOB PURPOSE

At H3X, we are building the most advanced electric motors in the world for sustainable aviation, marine, industrial, and defense applications. At 12 kW / kg continuous, the HPDM family of integrated motor drives is a step change in electric propulsion technology and removes one of the main barriers blocking widespread proliferation of electric and hybrid aircraft. Our motors range in size from 30 kW to 30 MW and are 3X lighter than competitors’.

H3X is looking to hire an experienced Test Technician who will assist in the testing of prototype electric drive systems and facilitate product performance validation. Candidates should be experienced with testing procedures and data collection. This role will be a key part of the core engineering team and will have a direct impact on the trajectory of the company.

Setup, execute, and teardown dynamometer and environmental tests for motor drive systems

Execute test profiles according to written test procedures

Interpret live data, monitor for abnormalities, and make decisions during testing accordingly

Maintain testing equipment when necessary

Process and store data appropriately

High School Diploma or equivalent

2+ years of hands‑on mechanical assembly and testing experience

Proficiency in comprehending data and identifying abnormalities in datasets

Ability to troubleshoot and debug test equipment

Ability to understand test equipment assembly steps from CAD models and work instructions

Ability to follow safety procedures closely and identify safety issues

High intelligence, high energy, and high integrity

Excellent written and verbal communication to effectively share knowledge and build the collective mindshare of the company

Organized and obsessive attention to detail: no room for oversight when designing flight‑critical systems

Humble and open‑minded: willingness to accept feedback and learn, consistently improve upon yourself and the product for which you will be responsible

A high degree of emotional intelligence: ability to collaborate closely with coworkers in a respectful and empathetic manner

Fundamentally curious and motivated by first principles

Ability to access export‑controlled data

Experience with testing dynamo meters

Experience working with high voltage test systems

Experience with technical assembly work including fastening, component fabrication, wiring harness assembly, etc.

Associate’s or technical trade degree

Experience with testing DO‑160G / MIL‑810G / or other environmental specifications

Employee equity incentive plan

Health insurance: medical, vision, dental, ST & LT disability, and life

Gym membership stipend (up to $60 / month)

Epic or IKON Ski / Snowboard Pass (up to $869 provided)

Overtime opportunities

Paid time off accrual program

Relocation package

Bi‑weekly company events

401k program

$22-34 / hour USD

H3X Technologies is a U.S.

-based manufacturer of electric motors for sustainable aviation, marine, industrial, and defense applications. We have developed a family of integrated motor drives that can scale in power from 30kW to 30MW with power densities as high as 12 kW / kg and best‑in‑class efficiency. This high performance is enabled by novel scalable core technology and proprietary manufacturing processes for motor stacking, winding, and assembly.

The design, manufacturing, and testing of our products is done in‑house at our headquarters in Louisville, Colorado.

Our world‑class team is composed of experts from Tesla, Space

X, GE Aviation, and Siemens with deep knowledge in electric machines, power electronics, material science, control systems, and advanced manufacturing. We take pride in our multidisciplinary approach, relentless dedication, high capital efficiency, and Skunk works‑style execution.

We have raised over $30M and are backed by top venture capital and strategic investors, including Lockheed Martin, Hanwha, Y Combinator, Cubit Capital, Metaplanet, Tech Nexus, Liquid 2 Ventures, and Soma Capital, enabling rapid scaleup.

Our mission is to become the world leader in advanced electric motors to drive deep decarbonization in aviation,…