Test Engineer II

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.

ESS is looking for a motivated and versatileto join our team. The Test Engineer will be focused on projects at the , and will be involved in a wide spectrum of testing and validation activities including future product development, current product optimization, reliability, durability, troubleshooting, and root cause and corrective action analysis.

• Design tests to assess battery and system performance, reliability, and robustness consistent with product specifications.
• Configure test infrastructure (instrumentation, controls platform, data acquisition, diagnostic equipment, safety checks, etc.).
• Conduct component-level, subsystem-level, and integrated system testing.
• Compile, analyze, and report test data accurately and timely.
• Create and/or run models to predict component performances and facilitate design improvements.
• Lead root cause analyses and implement corrective actions.
• Participate in FMEA and HAZOP, and develop risk mitigation plans.

Minimum Requirements:

• BS or MS in ChE, Electrochemistry, or Mechanical Engineering.
• Must understand principles of thermodynamics and fluid dynamics.
• Experience interacting with lab and Engineering operations.
• Comfortable in a fast-paced, collaborative work environment.
• Must be able to multi-task several projects and prioritize workload to meet business specific deadlines.
• Good interpersonal and communication skills to work effectively with a small, dynamic team responsible for product development.

We'd love to see:

• Demonstrated knowledge of engineering principals in a fuel cell or battery industry.

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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