Systems Integration and Test Engineer Intern; Winter

Job Title: Systems Integration and Test Engineering Intern

Reports To: Senior Manager, Test Engineering

Position Type: Internship (Winter 2027 Term)

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, readilyavailableand safe, making it the leading contender in a rapidly evolving market.

Our leadership team is powered by decades ofexpertisein 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.

This intern will support integration testing and functional verification of Peak Energy's energy storage systems, working across BMS, inverters, and other systems from batteries to power electronics.

As Peak Energy scales its ESS testing infrastructure, this role helpsbuild outthe benchtop and HIL test capabilities needed tovalidatesystems ahead of production.

You'llwork closely with firmware, design, and simulation teams, gaining exposure to the full test lifecycle – from procedure development to execution to reporting.

This role suits a hands-on, curious engineer who'seager to learn by doing and comfortable navigating ambiguity in a fast-moving startup environment.

• Support functional testing of BMS, inverters, and other systems across Peak Energy's energy storage product
• Help design, set up, and run benchtop and HIL test setups for validation of the BMS
• Develop and execute test scripts to support test automation efforts
• Assistin developing test plans and procedures across electrical and mechanical systems
• Interface with design, simulation, and manufacturing engineering partners to inform design decisions
• Help analyze test data and document findings for engineering teams
• Support troubleshooting and diagnosis of issuesidentifiedduring testing
• Participate in a culture of rapid prototyping and testing

• Pursuing a Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a closely related field
• Experience interfacing with microcontrollers and writing scripts for functional testing
• Basic familiarity with electromechanical test setups
• Proficiency in Python or similar
• Strong analytical and problem-solving skills
• Comfortable working hands-on with hardware and lab equipment
• Passion for renewable energy, sustainability, and driving positive environmental impact through technology innovation
• Eligible to work in the U.S.

• Exposure to high voltage battery and power electronics systems
• Familiarity with battery management systems (BMS) architecture
• Coursework or project experience with hardware-in-the-loop (HIL) test systems

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. Ifyou’reexcited about this role but your experiencedoesn’tlook perfect on paper, we still want to hear from you.

• Speed Through Focus
  - Move fast but understand why. Focus on the goal,don'tsacrifice quality.
• Mission Over Self
  -It'sabout the greater good; confident humility. Take ownership and accountability.
• Face the Brutal Truth
  - Transparency, honesty, big picture curiosity.…