Senior Manufacturing Engineer (Electronics)

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.

H3X is seeking an Electronics Manufacturing Engineer to oversee PCB assembly and wire harness manufacturing and procurement. This role involves implementing new processes and improvements to meet the increasing demand. The position requires a high degree of self-motivation and responsibility, providing significant autonomy and direct responsibility for the production of numerous components.

Responsibilities

• Scale electronics manufacturing to meet growing company demand.

• Manage new product introduction (NPI) for PCB and harness assemblies.

• Troubleshoot and resolve electronics manufacturing issues.

• Ensure quality control through documentation and corrections for non-conformances.

• Identify and implement continuous improvement opportunities for yield, performance, and cost.

• Develop manufacturing instructions and tests for PCB and wire harnesses.

• Evaluate and assist contract manufacturers to ensure quality and reliability of electronics supply chain.

• Collaborate across departments to streamline processes and meet project timelines.

• Support design engineering with design for manufacturability (DFM) and prototype procurement.

Required Qualifications

• Bachelor’s or graduate degree in Electrical Engineering, Electronics, Computer Engineering, Mechanical Engineering or equivalent experience.

• 5+ years of experience as an Electronics Manufacturing or Design Engineer.

• Strong functional knowledge of PCB fabrication and assembly processes at low to high volumes.

• Experience with PCB fabrication and assembly procurement processes.

• Understanding of power electronic functions and high voltage systems.

• Proficiency in hand soldering TH and SMD components.

• Fundamental 3D CAD and circuit board design experience.

• Experience with quality standards (IPC-A-610, IPC-6012, etc.).

• Experience with AOI, X-ray, and flying probe tests PCB design experience.

• Ability to develop test methods, inspection plans, and quality control procedures.

• Expertise in designing custom fixturing and tools associated with electronics manufacturing.

• Strong written and verbal communication skills.

• Organized with strong attention to detail.

• Solid understanding of engineering fundamentals.

• Results-driven with a willingness to learn quickly.

• High emotional intelligence for effective collaboration.

• Fundamental curiosity and motivation by first principles.

Preferred Qualifications

• Programming experience in C, C++, Python, or other scripting languages.

• Experience designing PCBA layouts and schematics.

• Knowledge of electronic component BOM management and vendor list development.

• Familiarity with communication protocols (i2c, SPI, CAN, Ethernet).

• Experience with ISO9001 and/or AS9100 standards.

• Experience working in a startup environment.

• Knowledge of ESD controls.

Benefits & Compensation

• Salary Target: $120,000 - $180,000

• Employee equity incentive plan

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

• Gym membership stipend (up to $60/month)

• Outdoor Recreation Reimbursement ($900 annual maximum)

• Flexible hours (deliverable-based goals)

• Flexible time off (just need manager approval)

• 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. They take pride in our multidisciplinary approach, relentless dedication, high capital efficiency, and Skunkworks-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, TechNexus, 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.