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.