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Power Electronics Intern

3/18/2026

The intern will contribute to product features, design, and vision while taking ownership of power electronic systems ranging from 10W to 10kW, including DC/DC converters and inverters. Responsibilities also involve detailed design, component selection, schematic/layout work, and collaborating across engineering functions for optimization.

Working Hours

40 hours/week

Company Size

201-500 employees

Language

English

Visa Sponsorship

No

About The Company
Lunar exists to power homes around the world with endless clean energy. We believe that, provided with the right tools, a clean energy future is within reach. And to give people those tools, we’re building an ecosystem of all-electric products starting with a next-generation home battery system. Our Lunar System is a solar and battery product brilliantly designed to let you capture, store and use every ray of sunshine — day, night, and even during an outage. Every Lunar System comes with our AI-powered Gridshare software built in. This leading energy management platform controls any type of distributed energy resources (such as home batteries and EV chargers) to help homeowners maximize the value of their energy and optimize the wider power system. Recognizing our commitment and accomplishments, Forbes has named us one of America's Best Startup Employers for 2023. Want to help us shape the future of clean energy? We’re looking for passionate and talented candidates to join our team.
About the Role

Power Electronics Intern 

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…

  • Design power electronic systems from 10W–10kW, including DC/DC converters, offline isolated power supplies, and inverters—covering topology selection, semiconductor and magnetics design, schematic capture, PCB layout, and EMC
  • Own your systems start to finish, from specification and prototype through validation and manufacturing hand-off
  • Develop and execute verification and validation test plans at both the component and system level
  • Bring up and test hardware in the lab to validate functionality, optimize performance, and characterize critical parameters in high-voltage, high-noise environments
  • Collaborate across mechanical, thermal, reliability, and firmware engineering to optimize the full product
  • Contribute to product-level features, design direction, and vision—bringing both technical depth and creative thinking to the work

Desired Skills:

  • BS in Electrical Engineering with hands-on power electronics experience; MS or PhD with a power electronics focus preferred
  • Detailed understanding of active and passive component losses in power conversion and strategies to minimize them
  • Experience designing high-efficiency, high-density power converters using wide bandgap devices
  • Familiarity with a range of topologies (two-level, multilevel, soft switching, etc.) and the ability to analyze, select, and design for a given application
  • Knowledge of magnetics design—core material selection, winding optimization, and insulation strategies for both power and filtering applications
  • Strong EMC fundamentals applied to both PCB layout and filter design
  • Solid lab skills with hands-on experience using oscilloscopes, impedance analyzers, sources, and loads in high-voltage, high-noise environments

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: $25-$40 USD.

The actual offer, reflecting the total compensation package & benefits, 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.

Key Skills
Power Electronics DesignDC/DC ConvertersInvertersTopology SelectionSemiconductor SelectionMagnetics DesignSchematic DesignLayout DesignEMC DesignVerification TestingValidation TestingLab SkillsOscilloscopesImpedance AnalyzersWide Bandgap DevicesThermal Considerations
Categories
EngineeringEnergyScience & Research
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