High Voltage Electrical Systems Expert

2 days ago


Menlo Park, California, United States Mainspring Energy, Inc. Full time

Company Overview

Mainspring Energy is revolutionizing the power generation industry with its cutting-edge Linear Generator technology. As a leading player in the market, we're committed to delivering high-quality, reliable, and efficient onsite power generators that meet the world's strictest emissions requirements.

We're backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, who share our vision of transitioning the world to clean and affordable electricity. With our products already in commercial use across the U.S., we're rapidly expanding into international markets and hiring talented engineers to join our team.

About Mainspring Culture

At Mainspring, we value pragmatism, collaboration, and humility. Our teams work together seamlessly, sharing expertise and perspectives to drive innovation and deliver exceptional customer experiences. We believe in building relationships based on trust, respect, and open communication.

Job Description

We're seeking an expert in high voltage electrical systems to design, develop, and integrate battery packs and high voltage subsystems for our Linear Generator technology. The successful candidate will be responsible for:

  • Designing high-voltage (800V+) battery packs for backup battery operation of the Linear Generator
  • Leading high voltage system projects, including design and integration of high voltage batteries, grid-tie inverters, power capacitors, VFDs, and DC/DC converters
  • Driving validation, qualification, and reliability testing of high voltage subsystems
  • Collaborating with cross-functional teams to deliver battery packs and electrical hardware subsystems to production
  • Troubleshooting complex hardware and integration problems in R&D labs, production floors, and field units

This is a hybrid position, requiring both onsite and remote work. You'll need to be available for testing, troubleshooting, manufacturing support, and other site-specific tasks.

Qualifications and Skills

We're looking for a highly skilled engineer with 3-5 years of experience in high voltage battery development, testing, or integration. Your technical expertise should include understanding BMS fundamentals, and you must have a bachelor's degree or higher in Electrical Engineering or a related field.

Nice-to-Haves

A strong candidate would also possess expertise in different battery chemistries, the ability to explain their relative strengths and weaknesses, and experience working at a startup or rapid development environment.

Compensation and Benefits

The estimated salary for this role is $114,000 - $130,000 per year, plus pre-IPO stock options and benefits. This position is located in Menlo Park, CA. Salary adjustments may apply based on your level of experience.



  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Transforming the Future of Power GenerationMainspring Energy, Inc. is at the forefront of a revolution in power generation, leveraging innovative linear generator technology to create a more sustainable and efficient energy future.We are seeking an exceptional Electrical High Voltage System Architect to join our team in Menlo Park, CA. This role offers a...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Mainspring Energy, Inc. is revolutionizing power generation with a cutting-edge onsite power generator, the Linear Generator. This innovative technology has gained significant attention from commercial, industrial, and utility leaders.The company's commitment to fuel flexibility, rapid scalability, and near-zero NOx emissions makes it an attractive option...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Job OverviewMainspring Energy, Inc. is revolutionizing the power generation industry with its innovative Linear Generator technology.We are seeking a skilled High Voltage Battery System Engineer to join our electrical and electromechanical team. As a member of this team, you will be responsible for designing high voltage battery packs, leading high voltage...


  • Menlo Park, California, United States ZipRecruiter Full time

    OverviewMainspring is revolutionizing the power industry with its innovative linear generator technology. We're seeking an experienced High Voltage Electrical Engineer to join our electrical and electromechanical team.About the RoleThis hybrid position requires collaboration, technical expertise, and a passion for delivering cutting-edge solutions. You'll...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Electrify the Future with Mainspring Energy, Inc.We are Mainspring Energy, Inc., a pioneering company revolutionizing the power generation landscape. Our mission is to accelerate the transition to a net-zero carbon grid by developing innovative linear generators.As a key member of our electrical and electromechanical team, you will play a crucial role in...


  • Menlo Park, California, United States SLAC National Accelerator Laboratory Full time

    SLAC National Accelerator Laboratory OverviewWe are a world-renowned research center pushing the boundaries of human knowledge and understanding.Job SummaryWe are seeking an experienced engineer with a passion for leading high-powered RF systems to join our Electronic Engineering Division as a Deputy Department Head.About the JobThe successful candidate will...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Job Description: Mainspring Energy, Inc. is seeking a highly skilled Control Systems Modeling and Simulation Engineer to join our team. As a key member of our engineering team, you will be responsible for designing and implementing simulation models that replicate the behavior of our Linear Generators, including normal operation, site-specific load and use...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Empower the Future of Clean EnergyMainspring Energy, Inc. is at the forefront of revolutionizing the power generation industry with its innovative linear generator technology. As a pioneer in this field, we seek a skilled Technical Product Manager to drive our mission forward.Company OverviewWe are driven by our vision of an affordable, reliable, and...


  • Baldwin Park, California, United States Premier Service Co. Full time

    Job SummaryWe are seeking a highly skilled Commercial Electrician to join our team at Premier Service Company. As an Electrical Systems Specialist, you will be responsible for installing, maintaining and repairing electrical control systems, including wiring and lighting.About the RoleThe ideal candidate will have at least 5 years of electrical experience...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    About Mainspring EnergyMainspring Energy, Inc is a company that has developed a new category of power generation — the linear generator — which delivers local, scalable, and fuel-flexible power to help accelerate the transition to the net-zero carbon grid.The unique combination of attributes offered by Mainspring's linear generator enables applications...


  • Menlo Park, California, United States META Full time

    About META">META is a technology company that supports all the Data Center product teams, such as AI/ML servers, storage, networking, connectivity, and data centers. Our goal is to make Internet connectivity available to all through the Open Compute Project (OCP).">Job Overview">We are seeking a skilled Mechanical Design Expert to join our team. In this...


  • Buena Park, California, United States Knott's Berry Farm Full time

    Job OverviewWe are seeking a highly skilled and experienced Electrical Systems Manager to join our team at Knott's Berry Farm. This is a unique opportunity to lead the electrical maintenance department and oversee the repair, maintenance, and installation of electrical systems throughout our theme park.Key ResponsibilitiesManage and lead a team of electrical...


  • Menlo Park, California, United States Jems Electric Corp Full time

    Job DescriptionJEMS Electric, Corp is a dynamic electrical contracting company seeking an experienced Electrical Installation Specialist to join our team in Hollywood, FL.The ideal candidate will have a proven track record of completing service and residential new or remodel work independently, as well as starting and finishing small renovation projects both...


  • Menlo Park, California, United States Vello Systems Full time

    Job OverviewVello Systems is seeking a highly skilled Software Quality Assurance Engineer to join our team. As a key member of our engineering organization, you will play a critical role in ensuring the quality and reliability of our network solutions.Salary Range: $120,000 - $160,000 per yearAbout the Role:We are looking for an experienced QA Engineer who...


  • Menlo Park, California, United States Mainspring Energy, Inc. Full time

    Unlock a Career in Clean EnergyMainspring Energy, Inc is revolutionizing the power generation landscape with its innovative onsite power generator. The company's flexible and adaptable technology has captured the attention of commercial, industrial, and utility leaders who seek reliable and efficient local power solutions.The Mainspring Linear Generator is...


  • Menlo Park, California, United States SLAC National Accelerator Laboratory Full time

    Database Systems ArchitectSLAC National Accelerator Laboratory is seeking a highly skilled Database Systems Architect to support the development and maintenance of our scientific computing infrastructure. As a Database Systems Architect, you will be responsible for designing and implementing database solutions to meet the needs of our scientists and...


  • Menlo Park, California, United States Team Sheeper Full time

    The Water Fitness Expert is a key member of Team Sheeper, responsible for designing and leading engaging aqua fitness classes that cater to the diverse needs of our members.**Job Summary:**We are seeking an experienced and enthusiastic Aqua Fitness Instructor to join our team. As a Water Fitness Expert, you will be responsible for creating a safe and...


  • Menlo Park, California, United States SLAC National Accelerator Laboratory Full time

    Job OverviewWe are seeking a highly skilled High-Performance Cluster Engineer to join our team at SLAC National Accelerator Laboratory. As a key member of our Scientific Computing System (SCS) Division, you will be responsible for deploying, maintaining, and monitoring our expansive scientific computing infrastructure.Your primary focus will be on...


  • Menlo Park, California, United States PacBio Full time

    Pacific Biosciences (PacBio) is a leading innovator in genomic sequencing technology. We are seeking an experienced Senior Software Engineer to lead the design, development, and maintenance of instrument control software for our cutting-edge genomic sequencing platforms.Job SummaryThis position offers an exciting opportunity to contribute to the advancement...


  • Menlo Park, California, United States Elegen Full time

    About ElegenElegen is a pioneering life sciences company revolutionizing the DNA synthesis industry with cutting-edge technologies and innovative approaches. Our team of experts in biotechnology, chemistry, engineering, and software development collaborates to deliver high-quality products and services that meet the evolving needs of our clients in pharma,...