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.
THE ROLE:
H3X is looking to hire a 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.
RESPONSBILITIES:
Requirements/Concept
- Establish and document requirements
- Conceptualize designs and product architectures that meet program requirements
Design and Analysis
- Design parts and assemblies utilizing SolidWorks
- Perform and document mechanical analyses, including hand calculations, FEA, CFD, etc. for structural, model, thermal, and/or fluid aspects of products
- Present in Preliminary and Critical Design Reviews
Prototype and Manufacturing
- Compile and help source components within a Bill of Materials
- Generate engineering drawings via SolidWorks
- Perform tolerance stack-ups and convey via GD&T in engineering drawings
- Create build instructions for prototypes
Testing and Validation
- Create a Design Validation Plan and Report (DVP&R) for new products and/or subsystems
- Support testing execution and characterization of new designs
- Interpret test results, identify root-cause of issues, and make design recommendations to meet the highest level of reliability and performance
Integration
- Integrate sub-systems into full systems
- Support future production builds or complete system tests
Other
- Identify workplace hazards and implement safe processes
- 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).
- 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.
COMPANY BENEFITS:
- 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.
www.h3x.tech
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What We Do
H3X manufactures the world's most power-dense integrated motor drives (IMDs) ranging from 30kW to 3MW for aerospace, defense, marine, and heavy industry. From the sea to the sky, our products unlock major benefits for weight-sensitive, volume-constrained, and high power applications. At the core of our organization are principles that guide every action and decision we make. These values define our story, our problem-solving approach, and are the foundation for how we operate as a company. Be Relentless At the core of our organization are principles that guide every action and decision we make. These values define our story, our problem-solving approach, and are the foundation for how we operate as a company. Gain insight through humility Approach every challenge with a learner’s mindset. Be open to feedback, listen to others, and deepen your understanding through self-awareness. Put your ego aside and always seek truth in discussion with others. This is particularly crucial for effective leadership. Distill & Simplify Eliminate unjustified complexity and simplify wherever possible, whether in requirements, design, or execution. This applies to communication and decision-making as well. Use first principles thinking and distill each facet of a problem to its essence. Less is more. Find your flow Engage fully and work with intention, finding the rhythm and deep focus that leads to doing your best work. Discover your Ikigai - where your strengths, passions, and purpose drive both personal fulfillment and team success. When you're "in the zone", that is when the magic happens. SEND (Solve, Evolve, Nail It, Deliver) Devise the best solution with the information at hand, test it, learn from it, iterate quickly, and then nail it. Don't expect it to work perfectly the first time, but you should never encounter the same issue twice. Laser-focus on solving customer problems and deliver solutions that provide real value for them.
Why Work With Us
H3X is a skunkworks-style team laser-focused on building exceptional products through advanced engineering, vertical integration, and lightning-fast execution. We’ve assembled a world-class team of engineers and builders from SpaceX, Tesla, Anduril, and beyond. You’ll be surrounded by people who push you to do the best work of your life.
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