R&D Machinist

About the Role

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, include integrated drives, and are 3X lighter than competitors’ systems.

• Setup, program, and run CNC machining centers, manual mills and lathes, and other shop equipment.
• Machine a broad range of materials, including exotic metals.
• Produce precision components (down to .0005") from prints, modify existing parts, and inspect form and fit.
• Make, modify, or improvise tooling and fixtures when needed to complete assignments.
• Solve problems creatively, coming up with solutions to design issues related to machinability.
• Perform inspection of products using equipment such as micrometers, calipers, dial indicators, surface plates, & bench centers as required as per GD&T standards.
• Perform preventative maintenance on equipment and tools.
• Manage tooling, stock, and machines within shop.
• Work closely with Engineers to optimize design, workflow, and part production.

• High intelligence and high integrity
• Strong attention to detail
• High School Diploma or equivalent.
• Associates Degree or Technical certification is a plus.
• Minimum of 5 years of relevant machine shop experience.
• Minimum 5 years of experience operating and programming machine tools.
• Minimum 3 years of experience with inspection equipment.
• Excellent written and verbal communicator to effectively share knowledge and build the collective mindshare of the company.
• Organized and obsessive attention to detail: no room for oversight when making flight critical systems
• Humble and open-minded: willingness to accept feedback, learn, and consistently improve upon yourself and the products 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
• Position requires access to CUI/ITAR/EAR controlled information

• Hourly Compensation: $33.00/hr - $40.00/hr with potential for OT
• 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)
• Flexible hours (deliverable-based goals)
• PTO Policy (80 hours per 2000 hours, accrued per hour, PTO can be taken by the hour)
• Relocation package
• Monthly company events
• 401k program

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

H3X’s 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. They take pride in our multidisciplinary approach, relentless dedication, high capital efficiency, and Skunk works‑style execution.

H3X has raised over $30M and has backing from top VC firms and strategic firms including Lockheed Martin, Hanwha, Y Combinator, Cubit Capital, Metaplanet, Tech Nexus, and Liquid 2 Ventures to deploy capital for rapid scaleup.

H3X is poised to become the world’s leading supplier of advanced electric motors by 2030 to drive deep decarbonization in aviation, marine, and heavy industrial applications and unlock next‑generation electrified defense technology to strengthen national security.

H3X is an equal opportunity‑affirmative action employer and considers all qualified applicants for employment based on business needs, job requirements and individual qualifications, without regard to race, color, religion, sex, age, disability, sexual orientation, gender identity or expression, marital status, past or present military service or any other status protected by the laws or regulations in the locations where we operate.