Job Title: Test Engineer, ESS
Location: This role will be based in Sacramento, CA. During the first 3–6 months, the position will be based in our Burlingame, CA headquarters for onboarding before transitioning permanently to Sacramento.
Department: ESS Engineering
Reports To: Senior Manager, Test Engineering
Position Type: Full-time
About Peak Energy
Peak Energy is the first American venture to advance globally proven Sodium-Ion battery systems as the storage standard for the new era of renewable energy on a resilient grid.
Sodium-Ion is cheap, readily available and safe, making it the leading contender in a rapidly evolving market.
Our leadership team is powered by decades of expertise in scaling gigawatt-level innovation at world-class companies such as Tesla, Northvolt, Apple, Powin, Enovix, Zipline, Solid Power, and Fluence. We are backed by strategic investment and product partners such as TDK Ventures and Eclipse Ventures.
We are a team of engineers, operators, entrepreneurs, and partners driven by a shared ambition to set the new performance standard for renewable energy and grid resilience.
About the Role – Test Engineer, ESS
We are looking for a Test Engineer to support our testing and functional verification efforts for our energy storage systems, from battery to power electronics. This role works closely with design and simulation teams to understand risks, develop procedures, set up and run tests, and report on findings that directly inform the design direction of our products.
You will interface tightly with design, simulation, and manufacturing engineering partners across a fast-moving, early-stage energy company. This role sits at the intersection of technical rigor and rapid iteration, with a direct impact on product safety, reliability, and performance.
The ideal candidate is a self-starter who is hungry for knowledge, holds themselves and others to high standards, and brings a get-it-done attitude to every challenge — big or small. We are open to all levels.
What You'll Do
What You'll Bring
Preferred Qualifications
Peak Energy is committed to building a diverse and inclusive workforce. We strongly encourage women, people of color, and individuals from underrepresented groups to apply. We value skills, potential, and perspective over specific credentials. If you're excited about this role but your experience doesn't look perfect on paper, we still want to hear from you.
Our Core Values
Compensation & Benefits
The salary range for this role is $150,000–$215,000, with actual pay varying based on work location, experience, and skills. Our competitive benefits package includes:
Join us to thrive in a supportive environment while making a meaningful impact in the energy sector!
At Peak Energy Technologies Inc., we believe that a diverse and inclusive workplace makes us a more capable, innovative, and competitive company. We welcome people who represent diversity in their backgrounds, ethnicities, cultures, and experiences. Peak Energy Technologies Inc. is an equal opportunity employer, aiming to reach our company's full potential by cultivating an inclusive workforce. We do not discriminate on the basis of race, color, ancestry, religion, national origin, sexual orientation, citizenship, marital or family status, disability, gender identity or expression, veteran status, or any other legally protected status.
Job details are sourced from the employer's original posting.
Open job postingAbout the company
Peak Energy is an American venture setting the standard in low-cost, giga-scale storage for the new era of clean, affordable, and reliable energy. Our leadership team is powered by decades of expertise in scaling giga-watt-level innovation at world-class companies such as Tesla, Northvolt, SunPower, Fluence, and Enovix. Pioneering US-based vertical integration of Sodium-Ion Battery Energy Storage in partnership with leading Independent Power Producers and utilities, we will deploy systems from 2025, alongside a domestic Giga-Battery-Factory by 2027. We are a team of engineers, operators, entrepreneurs, and partners driven by a shared ambition to set the performance standard for renewable energy and grid resilience.