Mechanical Engineer - Early Career - H3X Technologies

JOB PURPOSE:

At H3X we are building the most advanced electric propulsion systems in the world to enable sustainable electric aircraft. 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 aircraft. We have several power classes of motors ranging from 30kW to 3MW and are selling to several markets including aviation, aerospace and defense, marine, and specialized ground vehicles.

About the Role: H3X is looking to hire an experienced Mechanical Engineer to take charge of design and prototype development across different motors in the HPDM product line. The engineering team operates like Skunkworks - small, highly technical, and swift. A high degree of self-motivation and responsibility is required as you will be given significant freedom and will be directly responsible for flight-critical parts.

Key Responsibilities 

• Identify optimal conceptual designs and potential architectures that meet program requirements.
• Complete detailed design for parts and assemblies utilizing SolidWorks.
• Complete and document mechanical analysis including hand calcs, FEA, or low level testing.
• Generate engineering drawings via SolidWorks using GD&T standards, including the creation of tolerance stack-ups to identify critical design characteristics.
• Present in Preliminary and Critical Design Reviews.
• Design systems for application-specific cooling, electrical, and mechanical integration.
• Compile Bill of Materials and source components for assemblies.
• Work with technicians to help build initial prototypes.
• Create work instructions for first articles.
• Create Design Validation Plan and Report (DVP&R) for systems.
• Execute testing and characterization of prototypes.
• Identify root causes of failures that occur in the prototyping process.
• Post-process test results and make design modifications to meet the highest level of reliability and performance.
• Integrate systems into customer applications.
• Support future production builds and complete system tests.
• Maintain testing and production equipment where necessary.

• Bachelor’s or Graduate Degree in Mechanical Engineering or similar.
• Hands-on experience assembling mechanical systems.
• 3 years of CAD software experience (SolidWorks preferred).
• SolidWorks proficient (or similar).
• 3 years’ experience with producing 2D part drawings & GD&T.
• Experience with static structural FEA (ANSYS preferred) (Familiarity with thermal and modal analysis preferred).
• 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 designing flight critical systems.
• Action biased, results oriented mentality.
• 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.

• 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) 
• Flexible time off (just need manager approval) 
• Continuing professional education benefit
• Relocation package 
• Monthly company events 
• 401k program

THE COMPANY:

H3X Technologies is a U.S.-based manufacturer of electric motors for sustainable aviation, marine, industrial, and defense applications. They 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 their products is done in-house at their headquarters in Louisville, Colorado. 

H3X’s world-class team is composed of experts from Tesla, SpaceX, GE Aviation, and Siemens with deep knowledge in electric machines, power electronics, material science, control systems, and advanced manufacturing. H3X takes pride in their multidisciplinary approach, relentless dedication, high capital efficiency, and Skunkworks-style execution. 

H3X has raised over $30M with backing from top VC firms and strategic firms, including Lockheed Martin, Hanwha, Y Combinator, Cubit Capital, Metaplanet, TechNexus, and Liquid 2 Ventures. 

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.

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