Test Engineer

Job Title:  Test Engineer, ESS Location: Burlingame, CA Department: 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.    What You'll Do Lead and conduct comprehensive testing of functional, thermal, electrical (HV/LV), and mechanical systems across our energy storage products Develop test strategies, plans, and procedures to evaluate key risks against performance, reliability, abuse/safety, and functional requirements Spearhead the design and acquisition of testing equipment and infrastructure Collaborate with engineering teams to ensure design integrity and drive improvements Analyze complex test data, report findings, and drive system enhancements Identify, diagnose, and resolve intricate technical issues during testing Perform root cause analysis on system failures and develop corrective and preventive actions Drive innovation in testing methodologies and practices Interface tightly with design, simulation, and manufacturing engineering partners to inform design decisions Maintain detailed records of tests, analyses, and corrective actions; prepare reports and presentations for internal and external stakeholders Drive and participate in a culture of rapid prototyping and automation   What You'll Bring Bachelor's degree in Mechanical Engineering, Electrical Engineering, Aerospace Engineering, or a related field 1–4+ years of experience in test engineering, preferably within battery storage or renewable energy sectors; includes relevant internships and student group projects Strong understanding of electromechanical engineering first principles Proficiency in data processing and analysis tools Excellent problem-solving skills with the ability to think critically and act decisively Strong communication skills with the ability to present complex technical information clearly to both technical and non-technical stakeholders Ability to work collaboratively in a fast-paced, dynamic environment Proactive ownership mindset with a strong sense of accountability   Preferred Qualifications Experience with battery systems, energy storage, or power electronics testing Familiarity with automated test systems or rapid prototyping workflows Background in reliability, abuse, or environmental stress testing 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 Speed Through Focus – Move fast but understand why. Focus on the goal, don't sacrifice quality. Mission Over Self – It's about the greater good; confident humility. Take ownership and accountability. Face the Brutal Truth – Transparency, honesty, big picture curiosity. Fearless decision making. Be a Good Person – Kindness, collaboration and teamwork. Compensation & Benefits The salary range for this role is $140,000–$215,000, with actual pay varying based on work location, experience, and skills. Our competitive benefits package includes: Flexible time off Comprehensive medical, dental, and vision coverage Strong 401(k) plan Equity opportunities Many great work perks 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.  

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