Amperesand · 5 hours ago
Sr. Power Electronics Design Engineer, Magnetics
San Francisco, California, United States
Full-time
Onsite
Mid, Senior Level
4+ years expAmperesand is disrupting industrial power with their innovative Solid State Transformer systems, aiming to revolutionize electrification globally. The Sr. Power Electronics Design Engineer will be responsible for designing advanced power conversion hardware, including isolated and non-isolated converter stages, while ensuring compliance with safety standards and collaborating closely with cross-functional teams.
ElectronicsInfrastructurePower GridRenewable Energy
Responsibilities
Design isolated and non-isolated converter stages using advanced topologies such as multi-level converters, cascaded H-bridges, Dual Active Bridge (DAB) and ensuring robust protection and safety compliance for MV/LV systems
Perform trade-off analysis and optimization of power conversion hardware to balance between loss, cost and size across Semiconductors, Magnetics and Cooling components
Design magnetics to meet applicable safety, isolation, and thermal standards
Design and verify high-voltage isolation strategies using magnetically and optically isolated signal and power paths across LV-MV domains
Use FEA simulations to design magnetics and guide high-power high-frequency PCBA designs
Work in close coordination with mechanical designers, manufacturing and test engineers to own the complete development cycle
Own the design validation of the magnetics components to validate performance targets, isolation requirements
Qualification
Required
M.S. or Ph.D. in Power Electronics, Electromagnetics or related field
4+ years' experience in magnetics design and in power conversion design
Strong fundamentals in electromagnetics and material properties
Experience working with SiC/GaN devices in high power density designs
Good understanding of loss mechanisms in semiconductor devices and high-frequency magnetics
Knowledge of Medium Voltage insulation coordination, hands-on experience with Hi-pot, Partial Discharge and Basic Impulse Test
Knowledge of EMI/EMC test Standards and Electrical Safety (IEC, UL) Standards
Strong analytical skills for interpreting simulation and test data to guide design revisions
Excellent written and verbal communications in English
Willingness and ability to travel up to 10% including internationally
Benefits
Competitive Salary + Incentive Stock Options
Medical, vision, and dental benefits for employees and their dependents, effective from the start of hire
Company paid Basic Life, AD&D, short-term and long-term disability insurance
Employees receive paid time off (PTO), paid sick days, and paid company holidays so they can rest, recharge, and take care of their health and personal needs.
Commuter Benefits
6-12 weeks 100% paid parental leave
Company
Amperesand
Amperesand operates as a grid infrastructure solution provider.
11-50 employees
H1B Sponsorship
Amperesand has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (5)
Funding
Current Stage
Early StageTotal Funding
$92.45M2025-11-18Series A· $80M
2024-02-07Seed· $12.45M
Leadership Team
Sriram Vaisambhayana
Co-Founder
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