Test Engineer Intern, ESS (Summer 2027)

Peak Energy•Burlingame, CA

1d•Onsite

About The Position

Peak Energy is hiring a Test Engineer Intern to support testing and functional verification of energy storage systems, from batteries to power electronics. The intern will work with design and simulation teams to understand testing needs, develop procedures, set up and run tests, and report findings that inform product design. The role also interfaces with manufacturing engineering partners and offers hands-on experience at an early-stage energy company. Candidates must be available to begin employment in Summer 2027. The ideal candidate is a self-starter who is eager to learn, holds themselves and others to high standards, and brings a get-it-done attitude. Peak Energy describes its culture through the values Speed Through Focus, Mission Over Self, Face the Brutal Truth, and Be a Good Person. The company welcomes diverse applicants and emphasizes skills, potential, and perspective over specific credentials.

Requirements

Working toward a bachelor's degree in Mechanical Engineering, Electrical Engineering, Aerospace Engineering, or a related field.
Experience in test engineering, preferably in battery storage or renewable energy.
Strong understanding of electromechanical engineering first principles.
Proficiency with data processing and analysis tools.
Strong problem-solving skills, including the ability to think critically and act decisively.
Strong communication skills and ability to clearly present complex technical information to technical and non-technical stakeholders.
Ability to work collaboratively in a fast-paced, dynamic environment.
Proactive ownership mindset and strong sense of accountability.
Availability to begin employment in Summer 2027.

Nice To Haves

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.

Responsibilities

Conduct comprehensive testing of functional, high-voltage, thermal, and mechanical systems across energy storage products.
Develop test strategies, plans, and procedures to evaluate key risks.
Lead the design and acquisition of testing infrastructure.
Collaborate with engineering teams to ensure design integrity and drive improvements.
Analyze test data, report findings, and drive system enhancements.
Identify, diagnose, and resolve technical issues during testing.
Perform root cause analysis on system failures and develop corrective and preventive actions.
Advance testing methodologies and practices.
Work closely with design, simulation, and manufacturing engineering partners to inform design decisions.
Maintain detailed records of tests, analyses, and corrective actions, and prepare reports and presentations for internal and external stakeholders.
Drive and participate in a culture of rapid prototyping and automation.