Power Electronics Engineer

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.ResponsibilitiesCreate the best possible products by contributing to product level features, design, and vision by leveraging your experience and creativityDetailed design of power electronic systems from 10W – 10kW, DC/DC converters, offline isolated power supplies, and inverters including the selection of topology, semiconductors, magnetics design, schematic design and layout, EMC and design of various safety aspectsCollaborate to create efficient verification and validation test plans for the individual components as well as the complete systemBring up and testing of systems to validate functionality, optimize performance, and evaluate critical characteristicsWork across functions such as mechanical, thermal, reliability, and firmware engineering to optimize the productStart-to-finish ownership of the power conversion system from specification through design, prototype, validation and manufacturingRelevant SkillsMinimum B.S. in Electrical Engineering with 5 years’ experience in power electronics design. M.S. or Ph.D. degree with power electronics focus is preferred. Job grade can be discussed based on qualification and experienceDetailed understanding of active and passive component losses in power conversion and the various means to reduce/mitigate those lossesExperience of designing high efficiency and high density power converters with wide bandgap devicesFamiliarity with various topologies (two-level, multilevel, soft switching, etc.) and ability to analyze, select, and design topologies best suited for a given applicationKnowledge of sensor design to measure converter parameters in real time in a noisy environmentFamiliarity with magnetics design and specification, applications of various core materials for both power and filtering, knowledge of winding structure and optimization, and insulation strategiesEMC design and optimization. Understanding of EMC theory applied to both PCB layout as well as filter designsAbility to design schematics and conduct layout design or review as it applies to power conversionStrong lab skills with working knowledge of the tools and techniques for power conversion test and analysis (e.g., use of oscilloscopes, impedance analyzers, sources, and loads in an environment with both high voltages and currents, and high common-mode and differential-mode noise)Helpful SkillsWorking with high voltage, current, and powerAbility to simulate power converter based electrical systems and familiarity with the tools thereofFamiliarity with global safety and EMC certifications and building systems to pass the relevant codesPrevious work in the solar, energy storage, or EV/ EV Charging industriesFamiliarity with embedded control and application and programming of microcontrollersUnderstanding of mechanical and thermal considerationsBenefits:We’re dedicated to creating a remarkable employee experience. At Lunar, competitive base pay is one part of our total compensation package. Lunar employees also have the opportunity to become Lunar shareholders by getting equity in a fast-growing company and participating in our employee stock program.Additional benefits include:Medical, dental, and vision insurance for employees and dependentsFlexible Paid Time Off plus 10 paid holidaysTax deferred 401(k) planPaid parental leave for all full time employees including 12 weeks paid parental leave for the birthing mother and 6 weeks paid parental leave for the non-birthing parent Subsidized EV charging and pre-tax commuter benefitsOur 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 salary 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 salary range estimate for this position depending on level of experience is: $125,000 - $165,000 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.