logo inner

Power Electronics Engineer

ESSWilsonville, Oregon, United StatesOnsite
This job is no longer open

Catalyzing a cleaner future.


At ESS (NYSE: GWH), our mission is to accelerate global decarbonization by providing safe, sustainable, long-duration energy storage that powers people, communities, and businesses with clean, renewable energy anytime and anywhere it’s needed. As more renewable energy is added to the grid, long- duration battery energy storage systems (BESS) are essential to providing the reliability and resiliency we need when the sun is not shining and the wind is not blowing. Our technology uses earth-abundant iron, salt, and water to deliver environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utility-scale energy storage applications.

Established in 2011, ESS Inc. enables project developers, independent power producers, utilities, and other large energy users to deploy reliable, sustainable long-duration energy storage solutions. For more information visit www.essinc.com. ESS is seeking an experienced and dynamic Power Electronics Engineer with a strong background in low to medium voltage AC and DC applications and a willingness to perform hands-on development and testing. The role will focus on development and integration of inverter and converter products in the ESS battery storage systems.  The successful candidate will design, develop and test ESS systems while working with multifunctional teams on critical projects.

 The ideal candidate will have a passion for sustainability and the environment, will thrive in a fast-paced entrepreneurial setting, be self-motivated, and have an interest in disruptive, cutting-edge technology.

What you’ll do at ESS.


  • Become the subject matter expert of the power controls hardware in ESS’ products and be responsible for the design, modeling, specification, and testing of low to medium voltage electrical power systems and equipment.
  • Develop improvements and new product integration through research, design, technical evaluation, and documentation utilizing engineering principles.
  • Develop test plans, build test fixtures, and execute tests to assess the functionality & performance of inverters and converters implemented in flow batteries used for grid-forming, grid-following applications, and DC microgrids. 
  • Develop functional requirements documents, build hardware prototypes, and perform analysis and testing to confirm equipment compliance to applicable specifications.
  • Interface with suppliers, manufacturing, sales, and marketing in the product development process.
  • Utilize Autocad Electrical to prepare schematics and single line diagrams of electrical systems. 
  • Conduct research to test or analyze the design, operation, and performance of equipment.
  • Prepare performance requirements for equipment and systems.
  • Ensure compliance to UL, CSA, IEC, IEEE, EU and EN requirements.
  • Ensure engineering design and standards documentation is complete, accurate and sufficient in support of manufacturing and quality assurance activities, and compliant with customer specifications and regulations.
  • Actively communicate specific work requirements or needs to internal functions, such as purchasing and manufacturing to ensure expectations are understood as defined by engineering specifications.

What you bring to the table.


Minimum Requirements:


  • BS Engineering in Electrical Engineering.
  • 5 years’ experience in a Power Electronics Engineering role.
  • Fundamental understanding of various control strategies and conversion topologies.
  • Experience with PCB design with working voltages up to 1kV using industry standard tools (Altium Designer, Eagle, OrCAD, etc).
  • Experience in power electronic PCB layout and building hardware prototypes.
  • Proven proficiency in 2‐D CAD systems (i.e., AutoCAD) for design, documentation, and fabrication.
  • Expert knowledge of AC (multi-phase) and DC power, power conversion techniques & principles, motor drive, and UPS battery management systems. 
  • Experience designing and building test stands for power electronics. 
  • Ability to work in a cross-functional and geographically dispersed team environment and across departments: R&D, Manufacturing, Quality, Supply Chain.
  • Experience proving durability and reliability of products through design and implementation of dedicated testing.
  • Experience designing products at high volume.  Proven DFM and DFR track record.
  • Strong communication and presentation skills, affable, with demonstrated maturity and professionalism.
  • Self-starter who can follow tasks through to completion with little guidance.
  • Ability to multi‐task several projects and prioritize workload to meet business specific deadlines.
  • Ability to lift 50 lbs. unassisted.
  • Ability to follow job required Standards and Safety Protocols, per pre-defined processes.
  • Must be able to wear Personal Protection Equipment according to OSHA rules and regulations.

We’d love to see:


  • Master’s degree in Electrical Engineering.
  • Experience in new-product technologies introduction and scale to manufacturing.
  • Experience commercializing new products in a production environment.
  • Experience in battery, fuel cell technologies or power generation systems.
  • Proficient in DC/DC bidirectional converter topologies and DC/AC bidirectional active front end PFC grid tied inverters.
  • Experience in GaN and/or SiC technology.
  • Understanding of AC and DC Microgrid ESS Battery Storage principles and applications.
  • Understanding of UL 1741SA and IEEE 1547 Smart Inverter GRID Codes and utility scale applications.
  • Experience with the protection of power systems per grounding system type (TT. IT & TN).
  • Some experience working with embedded system engineers or experience with embedded programming.
  • Basic understanding of CAN Communication Protocol (CAN 2.0A/2,0B).
  • Basic understanding of MODBUS Communication Protocol (RS485, TCP/IP).

Benefits of working at ESS.


In addition to the value of working with and helping grow a global reaching clean technology, ESS offers a Company assisted Health insurance, Approved PPE Reimbursement, Medical & Dental; Flex spending account; 8 paid holidays; 401K, and a competitive PTO accrual.As an equal opportunity employer, we are open to considering every qualified candidate who is eligible and legally authorized to work in the United States on a full or part-time basis, without a need for sponsorship.Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job.

Duties, responsibilities, and activities may change at any time with or without notice.#LI-MD1

This job is no longer open

Life at ESS

Thrive Here & What We Value1. ESS is committed to creating sustainable energy solutions for the future. | 2. ESS values collaboration, innovation, and continuous improvement. | 3. ESS offers competitive benefits such as Company assisted Health insurance, Approved PPE Reimbursement, Medical & Dental; Flex spending account; 8 paid holidays; 401K, and a competitive PTO accrual.</s> | 21. Company Assisted Medical, Dental and Vision Care | 22. Flexible Spending Account | 23. 8 Paid Holidays | 24. Competitive PTO Accrual | 25. Approved PPE Reimbursement</s> | 1. Clean Technology | 2. Decarbonization of the Grid | 3. Sustainable Energy Solutions | 4. Innovation and Excitement in Energy Storage | 5. Global Reach</s> | 1. Catalyzing a cleaner future | 2. Globally recognized leader in sustainable energy storage | 3. Pursuing ambitious goals with passion | 4. Leading the energy transition, creating sustainable energy solutions of the future to help individuals, businesses and communities change energy into lasting value</s> | 1. Accelerating global decarbonization by providing safe, sustainable, longduration energy storage that powers people, communities, and businesses with clean, renewable energy anytime and anywhere it’s needed. | 2. Established in 2011, ESS Inc. Enables project developers, independent power producers, utilities, and other large energy users to deploy reliable, sustainable longduration energy storage solutions. | 3. Our technology uses earthabundant iron, salt, and water to deliver environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utility-scale energy storage applications.</s> | 17. Company Assisted Medical, Dental and Vision | 18. 401k with Company Match | 19. Employee Stock Purchase Plan (ESPP) | 20. Generous PTO Accrual | 21. 8 Paid Holidays</s> | Accelerating global decarbonization by providing safe, sustainable long duration energy storage solutions | Enabling project developers, independent power producers, utilities, and other large energy users to deploy reliable, sustainable long-duration energy storage solutions | Using earth-abundant iron, salt, and water to deliver environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utility-scale energy storage applications.</s> | 1. Accelerating global decarbonization by providing safe, sustainable longduration energy storage solutions | 2. Emphasizing environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utilityscale energy storage applications. | 3. Providing reliable, sustainable longduration energy storage solutions to project developers, independent power producers, utilities, and other large energy users.</s> | 1. Decarbonization of the Grid | 2. Sustainable Energy Solutions | 3. Clean Technology | 1. ESS is a globally recognized leader in sustainable energy storage. | 2. ESS is consistently identified as one of the most innovative and exciting technology players. | 3. ESS is poised to be one of the fastest growing energy technology companies in the world, with projects already across 4 continents. | 4. The ESS vision is about enabling the decarbonization of the grid by achieving up to 100% of our electricity from clean, sustainable renewable energy.</s> | ESS is a globally recognized leader in sustainable energy storage and is consistently identified as one of the most innovative and exciting technology players in energy storage. | The ESS vision is about enabling the decarbonization of the grid by enabling us to achieve up to 100% of our electricity from clean, sustainable renewable energy. | At ESS, we are leading the energy transition, creating the sustainable energy solutions of the future to help individuals, businesses and communities change energy into lasting value.</s> | Accelerating global decarbonization by providing safe, sustainable, long-duration energy storage that powers people, communities, and businesses with clean, renewable energy anytime and anywhere it’s needed. | Established in 2011, ESS Inc. Enables project developers, independent power producers, utilities, and other large energy users to deploy reliable, sustainable long-duration energy storage solutions. | Our technology uses earth-abundant iron, salt, and water to deliver environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utility-scale energy storage applications.</s> | 1. ESS is a globally recognized leader in sustainable energy storage and is consistently identified as one of the most innovative and exciting technology players in energy storage. | 2. ESS is poised to be one of the fastest growing energy technology companies in the world, with projects already across 4 continents and an upcoming public offering. | 3. The ESS vision is about enabling the decarbonization of the grid by enabling us to achieve up to 100% of our electricity from clean, sustainable renewable energy. | 4. At ESS, we are leading the energy transition, creating the sustainable energy solutions of the future to help individuals, businesses and communities change energy into lasting value.</s> | Accelerating global decarbonization by providing safe, sustainable, long-duration energy storage that powers people, communities, and businesses with clean, renewable energy anytime and anywhere it’s needed. - Established in 2011, ESS Inc. Enables project developers, independent power producers, utilities, and other large energy users to deploy reliable, sustainable long-duration energy storage solutions. - Our technology uses earth-abundant iron, salt, and water to deliver environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utility-scale energy storage applications.</s> | Established in 2011, ESS Inc. Enables project developers, independent power producers, utilities, and other large energy users to deploy reliable, sustainable long-duration energy storage solutions.</s> | 2. Providing safe, sustainable, longduration energy storage solutions | 3. Collaborating with crossfunctional teams to ensure system integration processes and test procedures address full system requirements.</s> | ESS is committed to safety and empowered to build a safe work environment for everyone. | ESS values honesty, integrity, and transparency above all else. | ESS is inclusive and celebrates the diversity of their team, leveraging collective genius and experience. | ESS builds products that are catalyzing the clean energy future and enabling customers to achieve their clean energy vision. | ESS reflects commitment in their workspace by continually working to reduce environmental impact. | ESS strives for excellence in everything they do.</s> | 2. ESS is consistently identified as one of the most innovative and exciting technology players in energy storage. | 4. The ESS vision is about enabling the decarbonization of the grid by enabling us to achieve up to 100% of our electricity from clean, sustainable renewable energy. | 5. At ESS, we are leading the energy transition, creating the sustainable energy solutions of the future to help individuals, businesses and communities change energy into lasting value.</s> | ESS cares about your health and safety therefore strongly encourages all our employees to get vaccinated and remain current with your COVID vaccine. Learn more at cdc.gov/coronavirus.</s>
Your tracker settings

We use cookies and similar methods to recognize visitors and remember their preferences. We also use them to measure ad campaign effectiveness, target ads and analyze site traffic. To learn more about these methods, including how to disable them, view our Cookie Policy or Privacy Policy.

By tapping `Accept`, you consent to the use of these methods by us and third parties. You can always change your tracker preferences by visiting our Cookie Policy.

logo innerThatStartupJob
Discover the best startup and their job positions, all in one place.
Copyright © 2024