Systems Integration and Test Engineer Intern (Summer 2027)

Peak Energy • Burlingame, CA

2d • Onsite

About The Position

Peak Energy is hiring a Systems Integration and Test Engineering Intern for the Summer 2027 term in Burlingame, California, within ESS Engineering. The intern will support integration testing and functional verification of Peak Energy’s energy storage systems, working across battery management systems (BMS), inverters, and other components spanning batteries and power electronics. As the company expands its energy storage system (ESS) testing infrastructure, the intern will help develop benchtop and hardware-in-the-loop (HIL) test capabilities to validate systems ahead of production. The position works closely with firmware, design, simulation, and manufacturing engineering teams and provides exposure to the full testing lifecycle, including procedure development, execution, and reporting. It is suited to a hands-on, curious engineering student who is eager to learn by doing and comfortable with ambiguity in a fast-moving startup environment.

Requirements

• 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 a similar language.
• Strong analytical and problem-solving skills.
• Comfort 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.

Nice To Haves

• 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.

Responsibilities

• 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 BMS validation.
• Develop and execute test scripts to support test automation efforts.
• Assist in developing test plans and procedures across electrical and mechanical systems.
• Interface with design, simulation, and manufacturing engineering partners to inform design decisions.
• Analyze test data and document findings for engineering teams.
• Support troubleshooting and diagnosis of issues identified during testing.
• Participate in a culture of rapid prototyping and testing.

What This Job Offers

• Career Level: Intern