Systems Integration and Test Engineer Intern (Summer 2027)

Peak Energy; San Francisco (CA); On-site; USD 40,000 - 57,000; Full time

Job summary

Peak Energy, a San Francisco-based startup, seeks a Systems Integration and Test Engineering Intern for Summer 2027. You will assist with integration testing across BMS, inverters and power electronics, gaining hands-on experience with battery systems and test infrastructure.

You’ll collaborate with firmware, design and simulation teams, developing procedures and executing tests from bench to automation. The role suits hands-on learners in a fast-moving startup.

Qualifications

• Pursuing a Bachelor's or Master’s in Electrical/Computer Engineering or a closely related field.
• Experience interfacing with microcontrollers and scripting for testing.
• Familiarity with electromechanical test setups.
• Proficient in Python or similar.
• Strong analytical and problem-solving skills.
• Hands-on with hardware and lab equipment.
• Eligible to work in the U.S.
• Passion for renewable energy and sustainability.

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 validation of the BMS.
• 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.
• Help 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.

Skills

Python

MCU interfacing

Hardware testing

Analytical

Hands-on hardware

Lab equipment handling

Education

Electrical/Computer Engineering degree

Tools

HIL test systems

Benchtop testing

Job description

Job Title: Systems Integration and Test Engineering Intern

Reports To: Senior Manager, Test Engineering

Position Type: Internship (Summer 2027 Term)

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, 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.

About the Role – Systems Integration and Test Engineering Intern

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 engineerwho'seager to learn by doing and comfortable navigating ambiguity in a fast-moving startup environment.

What You'll Do (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 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

What You'll Bring (Qualifications)

• Pursuing a Bachelor's orMaster'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
• Proficiencyin 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.

Preferred Qualifications

• 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.

Our Core Values

• 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. Fearless decision making.
• Be a Good Person - Kindness,collaborationand teamwork.

The hourly rate for this role is $35/hr. 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 whorepresentdiversity 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 discriminateon the basis ofrace, 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.