Senior Manufacturing Engineer (Electronics

H3X Electronics Manufacturing Engineer

H3X is building America's advanced electric motor company, powering next-generation platforms in aerospace, defense, and marine. Our integrated motor drives deliver 12+ kW/kg, roughly 3x the power density of competing solutions. We're now scaling to megawatt-class systems, with customers working on everything from supersonic aircraft to turbine power generation for AI datacenters.

Our team brings together engineers and operators from aerospace, defense, and motorsports, with deep expertise in electric machines, power electronics, material science, and advanced manufacturing. We're a small, fast-moving team doing hard engineering that matters, and we're looking for people who want to do the best work of their careers alongside us.

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.

What you will do:

• 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.

What we are looking for:

• 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 Experience:

• 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 ISO
  9001 and/or AS9100 standards.
• Experience working in a startup environment.
• Knowledge of ESD controls.

Why H3X:

Joining H3X means working on hard, meaningful problems with a skunk works-style team that's laser-focused on building exceptional products. We're deeply vertically integrated and have a very tight design-build-test loop, which lets us move from concept to hardware at unmatched speed. We've gone from idea to shipping product in less than two months.

We're a small, highly skilled team where everyone carries real responsibility and shares an extreme ownership mentality. We stay focused on the critical path, keep bureaucracy to a minimum, and structure everything around delivering results. You'll learn and grow faster here than you would anywhere else.

You'll work alongside world-class engineers and builders who are pioneering electric motor technology at scale on some of the coolest programs in the industry, from supersonic aircraft to power generation for AI datacenters. If you want your contributions to be visible and your work to directly shape American reindustrialization, you'll feel at home here.

Compensation:

• Annual Salary Target: $120,000 - $180,000

Benefits:

Our team provides robust benefits including medical, vision, dental, disability, & life insurance offerings, employee equity incentive program, & 401k program. Additional benefits include our gym membership stipend and outdoor recreation reimbursement program. We have an execution based culture, with flexible hours, flexible time off, 12 company holidays (including our company ski trip), monthly company events, and weekly…