Test Engineer Intern, ESS (Fall 2026)

Peak Energy•Burlingame, CA

13d•Onsite

About The Position

We are looking for a Test Engineer Intern to support our testing and functional verification efforts for our energy storage systems, from battery to power electronics. This role will work closely with design and simulation teams to understand needs, develop procedures, set up and run tests, and report on findings that directly inform the design direction of our products. You will interface with design, simulation, and manufacturing engineering partners and gain hands-on experience across a fast-moving, early-stage energy company. Candidates should be available to begin employment in Fall 2026. 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.

Requirements

Working towards a Bachelor's degree in Mechanical Engineering, Electrical Engineering, Aerospace Engineering, or a related field
Experience in test engineering, preferably within battery storage or renewable energy sectors
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

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 our energy storage products
Develop test strategies, plans, and procedures to evaluate key risks
Spearhead the design and acquisition of testing 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