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 energy storage is 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.

As the Manufacturing Engineer I, you will specialize in the electrical and power systems within our manufacturing processes. You will work collaboratively with cross-functional teams to design, validate, and implement robust manufacturing processes and equipment, ensuring they meet the high standards of scalability and reliability required for our energy storage solutions.

What You’ll Do at ESS

• Participate in the development, validation, and deployment of manufacturing processes with a focus on electrical systems, wiring, and power distribution.
• Establish Bills of Materials (BOMs), workflows, fixtures, and tooling for efficient and high-quality assembly of electrical components, including wiring harnesses, control panels, and power management systems.
• Collaborate with R&D, Design Engineering, Quality, and Operations to transition electrical and power designs from prototype to full-scale production readiness.
• Specify, source, and validate manufacturing equipment and tools for electrical systems, including robotics, automated testing systems, and PLC-controlled equipment.
• Support product launches by providing estimates for labor, material handling, and electrical equipment needs, and ensure smooth installation and validation of production lines.
• Drive continuous improvement projects focusing on first-pass yield, electrical system reliability, cycle time reduction, and cost efficiency.
• Develop and implement safety-compliant manufacturing processes for electrical systems, ensuring adherence to site Environmental Health & Safety (EHS) policies.
• Troubleshoot and resolve electrical manufacturing challenges to ensure smooth and efficient operations.

What You Bring to the Table
Minimum Requirements:

• Bachelor’s Degree in Electrical Engineering, Manufacturing Engineering, or a related field.
• 1 to 2 years of experience in manufacturing, with specific expertise in electrical systems and power components.
• Experience with CAD/CAM tools and fixture/tool design in a production environment.
• Hands-on experience with at least one of the following:
  • Robotics and PLC-controlled equipment for electrical manufacturing.
  • Sourcing and qualifying suppliers for electrical systems, such as wiring harnesses, control panels, or power electronics.
  • Developing and implementing quality plans, sampling plans, or detailed work instructions for electrical processes.
• Proven ability to collaborate with multidisciplinary teams, including electrical, mechanical, and software engineers.
• Experience with BOM management and workflows in ERP systems such as Oracle.
• Understanding of electrical systems, including power distribution, wiring harnesses, and instrumentation.
• Proficiency in GD&T and ability to read and generate electrical drawings, schematics and specifications.

Preferred Qualifications:

• Some Lean Six Sigma training or equivalent experience, no certification required.
• Ability to edit and write scripts in C or Python.

Benefits of working at ESS

In addition to the value of working with and helping grow a global reaching clean technology, ESS offers Company assisted medical, dental and vision, 401k with Company match, Employee Stock Purchase Plan (ESPP), a generous PTO accrual, and 8 paid holidays.

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.

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