Test Engineer Intern, ESS (Summer 2027)

The role

The Test Engineer Intern will support testing and functional verification for energy storage systems from battery to power electronics. This role involves developing procedures, running tests, and reporting findings to inform product design.

What you will do

• Conduct comprehensive testing of functional, high voltage, thermal, and mechanical systems
• 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 with design, simulation, and manufacturing engineering partners
• Maintain detailed records of tests, analyses, and corrective actions

Required qualifications

• Working towards a Bachelor's degree in Mechanical Engineering, Electrical Engineering, Aerospace Engineering, or a related field
• Experience in test engineering
• Strong understanding of electromechanical engineering first principles
• Proficiency in data processing and analysis tools
• Excellent problem-solving skills
• Strong communication skills
• Ability to work collaboratively in a fast-paced, dynamic environment
• Proactive ownership mindset

Nice to have

• Experience within battery storage or renewable energy sectors
• 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

About the company

Peak Energy is an American venture advancing Sodium-Ion battery systems for renewable energy and grid resilience. The leadership team has experience scaling innovation at companies such as Tesla, Northvolt, and Apple.