Design and develop high-density power conversion circuits, magnetics, and solid-state transformer modules. Integrate GaN semiconductors and planar magnetics, translate simulations into prototypes, optimize efficiency, thermal performance, reliability, and cost, and collaborate with mechanical, thermal, and controls engineers. Lead testing, root-cause analysis, and iterative design improvements across the full power electronics development cycle.
Enphase Energy is a global energy technology company and a leading provider of solar, battery, and electric vehicle charging products. Founded in 2006, our innovative microinverter technology revolutionized solar power, making it a safer, more reliable, and scalable energy source. Today, the Enphase Energy System enables users to make, use, save, and sell their own power. Enphase is also one of the most successful and innovative clean energy companies in the world, with more than 80 million products shipped across 160 countries.
Join our dynamic team designing and developing next-gen energy technologies and help drive a sustainable future!
About The Role
This position sits within the core Engineering R&D group focused on our Solid-State Transformer (SST) platform. Our team is responsible for defining and delivering the next-generation power module, with higher power density to reduce footprint and thermal load. We're looking for a technically deep power electronics engineer focused on increasing efficiency while reducing cost per watt.
What You Will Do
- Design and develop power conversion circuits and magnetics for the SST platform, optimizing for power density, efficiency, and thermal performance
- Evaluate and integrate advanced power semiconductor devices (particularly, GaN) and planar magnetics to increase power throughput while shrinking module footprint
- Translate modeling and simulation results into benchtop prototypes, and reconcile differences between predicted and measured performance
- Drive design trade-offs across power density, efficiency, thermal management, and cost per watt to meet next-generation product targets
- Co-design with mechanical and thermal engineering to jointly optimize packaging, cooling, and power density, and collaborate with controls engineering to integrate power modules into the SST platform
- Lead root-cause analysis and design iteration based on test data to continuously improve power density and reliability
Who You Are and What You Bring
- B.S., M.S., or Ph.D. in Electrical Engineering or closely related field
- Engineer: BS + 3 yrs | MS +1 yr; Senior Engineer: BS + 5 yrs | MS + 3 yrs | PhD + 1yr; Staff Engineer: BS + 8 yrs | MS + 6 yrs | PhD + 3 yrs
- Typically, 4+ years of electronics hardware/system design experience (or equivalent depth of experience)
- Hands-on experience in the full cycle of schematic capture, layout, and testing of power electronics, particularly if focused on power density
- Proficiency with one or more ECAD tools such as OrCAD, KiCad, or Altium
- Ability to translate modeling and simulation to benchtop performance and be able to reconcile differences between theory and practice
- Familiarity with advanced power semiconductor devices and magnetics (particularly planar transformers)
- Experience co-designing power electronics with mechanical and thermal engineering teams, balancing electrical performance against packaging and cooling constraints
- Experience working with digital controls and automation necessary for power conversion testing
The base salary range for this position in Petaluma, CA is $95,000 to $145,000 and may vary based on experience, skills, and location.
This position is also eligible for bonus, equity, and benefits, with final compensation determined in accordance with applicable laws and internal equity.
Enphase Fremont, California, USA Office
Fremont, CA, United States
Similar Jobs
Aerospace • Automotive • Transportation
Leads manufacturing engineering for aircraft power electronics and electric propulsion, including new product introduction, process development, equipment readiness, design-for-manufacturing reviews, continuous improvement, validation, and production scale-up. Partners with design, quality, test, and equipment teams to improve safety, quality, throughput, ergonomics, and end-of-line testing. Develops manufacturing procedures and supports welding, soldering, adhesive dispensing, power electronics assembly, and volume production.
Top Skills:
14 Cfr Part 21Asme Y14.5AutomationDfaDfmElectric Motor AssemblyGd&TIso 13485Iso 9001Laser WeldingLean ManufacturingPcba ManufacturingPower ElectronicsSelective SolderingSpcTs16949
Automotive
Architects and develops high-power AC/DC and DC/DC systems for EV chargers, including multi-level converters and grid-tie inverters up to 200 kW and 2000 VDC. Owns product design from modeling, component selection, schematics, PCB layout, controls, magnetics, thermal design, compliance, and manufacturability through validation and production. Collaborates cross-functionally to deliver reliable power electronics products and resolve system, laboratory, and test issues.
Top Skills:
Ac/Dc ConvertersDc/Dc ConvertersDfmDspEmbedded SoftwareFlybackForward ConvertersFpgasGrid-Tie InvertersLlcMagnetics DesignMatlabMulti-Level ConvertersPcb LayoutPfcPhase-Shifted Full BridgePldsPlecsPower ElectronicsSchematic CaptureSpiceThermal DesignZcsZvs
Healthtech • Biotech
Own the architecture, modeling, prototyping, validation, and iteration of high-voltage, high-current, MHz-frequency power electronics for organ rewarming systems. Design novel converters, resonant networks, impedance-matching systems, and electromagnetic structures. Lead tradeoff studies, laboratory testing, instrumentation, safety infrastructure, and multidisciplinary collaboration across engineering and cryobiology.
Top Skills:
Analog Circuit DesignAnsys MaxwellCalorimetryElectromagneticsEmi/EmcGanHigh-Current SystemsHigh-Voltage SystemsImpedance MatchingInstrumentationLiquid CoolingMhz-Frequency SystemsPower ElectronicsPsimResonant NetworksRfShieldingSicSpiceThermal Modeling
What you need to know about the San Francisco Tech Scene
San Francisco and the surrounding Bay Area attracts more startup funding than any other region in the world. Home to Stanford University and UC Berkeley, leading VC firms and several of the world’s most valuable companies, the Bay Area is the place to go for anyone looking to make it big in the tech industry. That said, San Francisco has a lot to offer beyond technology thanks to a thriving art and music scene, excellent food and a short drive to several of the country’s most beautiful recreational areas.
Key Facts About San Francisco Tech
- Number of Tech Workers: 365,500; 13.9% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Google, Apple, Salesforce, Meta
- Key Industries: Artificial intelligence, cloud computing, fintech, consumer technology, software
- Funding Landscape: $50.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Sequoia Capital, Andreessen Horowitz, Bessemer Venture Partners, Greylock Partners, Khosla Ventures, Kleiner Perkins
- Research Centers and Universities: Stanford University; University of California, Berkeley; University of San Francisco; Santa Clara University; Ames Research Center; Center for AI Safety; California Institute for Regenerative Medicine
