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Electrical Engineer - Power Electronics

Job in Menlo Park, San Mateo County, California, 94029, USA
Listing for: Mainspring Energy
Full Time position
Listed on 2026-11-04
Job specializations:
  • Engineering
    Electrical Engineering, Electronics Engineer, Hardware Engineer, Systems Engineer
Salary/Wage Range or Industry Benchmark: 120000 - 160000 USD Yearly USD 120000.00 160000.00 YEAR
Job Description & How to Apply Below
Position: Staff Electrical Engineer - Power Electronics

Overview

The technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a team of electrical engineers who own hardware design from initial concept through test and manufacturing.

We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.

Responsibilities
  • Design custom power electronics hardware that enables key functions of our Linear Generator
  • Bring-up, validate, and qualify your power electronics designs
  • Troubleshoot complex hardware issues that arise in the test lab, production floor, and fielded units
  • Collaborate with the new production introduction team and external suppliers to improve designs for manufacturability and testability
  • Partner with reliability engineers to further drive up electrical hardware reliability
  • Serve as an expert on the hardware systems that you own
Qualifications
  • Bachelor’s degree, or higher, in Electrical Engineering
  • 8 years of experience developing power electronics technologies
  • Excellent electronics design fundamentals; ability to take concept level design details, select components, and produce a schematic
  • Examples of taking ownership of a power electronics design project
  • Circuit board design experience
  • Familiar with schematic capture and power converter circuit modeling/simulation tools
  • Knowledge of power electronics control theory
  • Proficiency with EE tools (Oscilloscopes, Power Analyzers, Network Analyzers, Signal Generators etc.)
  • Experience with power semiconductor selection, gate drive, and protection circuit design
  • Proven ability to work independently on an electronics design project
  • Clear verbal and written communication skills
  • A passion for hands-on hardware development
  • A “collaborate-first” mindset and have successfully communicated across a range of teams and personalities
Nice-to-haves
  • Experience designing high voltage (480

    VAC or 800

    VDC range) systems
  • Experience designing kW-level power electronics
  • Experience in the full hardware development life cycle, from requirements development to manufacturing support
  • Experience working at a startup or rapid development environment
  • Experience with Altium
Additional Information

Does your experience not meet all of our posted requirements? We are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.

In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise.

New hires joining the company tend to be paid…

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