Hardware Test Engineering Intern

Lunar Energy is a home energy technology company that designs and sells integrated clean energy systems for residential customers. Its flagship product, the Lunar System, combines solar power generation, battery storage, and smart energy management into a compact, aesthetically designed unit that allows homeowners to produce, store, and use their own clean electricity. The company also offers the Lunar App and Lunar AI to help homeowners monitor and optimize their energy usage, as well as a Virtual Power Plant (VPP) program called Gridshare that enables customers to share stored energy with the broader grid. Lunar Energy's mission centers on making clean energy accessible, affordable, and simple for everyday homeowners, with the broader goal of accelerating the electrification of homes — including solar, EV charging, heating, and cooking. The company has partnered with Octopus Energy to offer innovative battery electricity plans, reflecting its commitment to rethinking how residential energy is produced and consumed. Lunar Energy has raised $232 million in financing to support its growth and expand its installer partner network across the United States. Founded by engineers with backgrounds at Tesla, Lunar Energy differentiates itself through a platform-first approach that goes beyond a standalone battery product, positioning its system as the foundation for whole-home electrification. The company serves both homeowners and a network of certified installer partners, and has received notable press coverage for its role in redefining home energy with smarter, cleaner power solutions.

Hardware Test Engineering Intern (Spring 2027)

A Test Engineering Intern on the Reliability Testing team at Lunar Energy will be responsible for ensuring the validation of the product throughout the entire lifecycle of our revolutionary home energy products. We are looking for people who are passionate about a more sustainable and energy independent  future and want to make that vision a reality.

Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.

On a given day at Lunar, you’ll likely:

• Perform and execute various types of testing as part of our hardware validation process. 
• Design and build test stands for PCBA testing 
• Specify test stand equipment and instrumentation
• Work with technicians for designing and building test stands
• Write Python scripts to enable test automation and process data coming out of the test
• Thoughtful use of AI assistants and coding tools (e.g., Claude, Gemini…etc) in your engineering workflow - including good judgment about when outputs need verification, awareness of confidentiality practices and a strong vision on how to structure your test code
• For test failures and field failures, aid failure analysis investigations and countermeasure validation with design team, reliability team and failure analysis lab 
• Collaborate with electrical, mechanical and firmware engineers across the company to develop thoughtful test methodologies 
• Analyze test data, write test reports and help extract important takeaways from the data 
• Contribute to various test infrastructure improvement efforts (ranging from contributing new features and functions to the codebase, creating custom test equipment…etc) 

Desired Skills

• Bachelor’s degree in engineering in progress. Mechatronics or electrical engineering background preferred. 
• Highly curious with hands-on project experience.
• Working knowledge of programming, Python and object oriented programming experience preferred. 
• Working knowledge of electronics/circuit analysis required, working knowledge of statics/mechanics of materials and heat and mass transfer is a plus. 
• Experience with test equipment like power supplies, multimeters, DAQs, various sensors/instrumentation…etc preferred.
• Familiarity with testing embedded/IoT systems or wireless communications (Wifi/mesh networks/BLE) is a plus.
• Basic mechanical design experience/familiarity with CAD software and/or designing PCBAs is a plus.

Our DE&I Philosophy: Lunar Energy is an equal opportunity employer. We are committed to attracting, developing and retaining diverse talent by supporting an inclusive workplace. Lunar recruits, hires, trains, promotes, compensates, and administers all personnel actions without regard to race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status or any other status protected by applicable law.

Our Compensation Philosophy: Our goal is to ensure that all Lunar Energy employees are fairly compensated. Please note that the hourly range information that follows is a good faith estimate for this position provided pursuant to the Pay Transparency for Pay Equity Act for California applicants. The hourly range estimate for this position depending on level of experience is $30-$40 USD

The actual offer, reflecting the total compensation package will be at the company’s sole discretion, and determined by factors including but not limited to years of experience, job level, geographic location, and other relevant business considerations. The company also reserves the right to amend or modify this job description, employee perks, and benefits at any time.