{"id":454537,"url":"https://alion.io/job/amperesand-senior-power-electronics-design-engineer","title":"Senior Power Electronics Design Engineer","company":{"id":174955,"name":"Amperesand","domain":"amperesand.io","url":"https://alion.io/company/amperesand","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":88,"open_postings":20,"ghost_share":0,"stale_share":0.3,"repost_share":0,"time_to_fill_p50_days":75,"computed_at":"2026-10-28T05:59:10Z"}},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":175000,"max":205000,"currency":"USD","period":"year","gross":null,"usd_annual":205000},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Transformers","optional":false}],"status":"live","first_seen_at":"2026-04-12T16:32:59Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-28T07:06:28Z","board_verified":true,"closed_at":null,"days_open":198,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":198},"description":"Company Overview \nAmperesand is reinventing how the world powers its most critical systems.\nWe are facing a once-in-a-generation opportunity for infrastructure disruption. Electricity demand is skyrocketing, driven by AI factories, electric vehicles, and modern industrial growth. Energy supply is shifting to incorporate a more diverse mix of resources - including solar, gas, and batteries - at a massive scale.\nAnd yet the power infrastructure behind our latest mega-projects hasn’t meaningfully changed in nearly 100 years. Supply chains for today’s infrastructure equipment can’t match the pace and sophistication of critical energy projects. Amperesand is building hardware and software that rewrites this broken power infrastructure playbook to support a new era of energy abundance.\nWe’ve built a new class of intelligent, software-defined power infrastructure products leveraging a decade of advanced medium voltage Solid State Transformer research that’s now ready for commercial deployment.\nOur products and solutions go far beyond the capabilities of traditional electrical equipment. We make power systems that are faster to deploy, dramatically smaller and more efficient, and capable of supporting modern, dynamic energy needs for tomorrow’s most demanding energy consumers.\nScalable in-house advanced manufacturing capability is our foundation for meeting timeline and quality expectation to serve infrastructure customers around the world.\nAmperesand is led by breakthrough energy hardware development veterans and funded by top tier investors who share our vision of building a category-defining energy technology company.\nWith hubs in San Francisco, Reno, and Singapore, our global team is laser focused on building foundational technology to solve the most pressing problems in power infrastructure at scale.\nJoin us in building the power foundation of the future!\nResponsibilities:\nYou will be responsible for designing isolated and non-isolated converter stages, implementing 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.\nPerform trade-off analysis and optimization of power conversion hardware to balance between loss, cost and size across Semiconductors, Magnetics and Cooling components\nDevelop modulation techniques and control algorithms to handle corner-case operation of modular power stages.\nDevelop Static and Dynamic equivalent models for power stage hardware to support closed-loop control implementations.\nDesign and verify high-voltage isolation strategies using magnetically and optically isolated signal and power paths across LV-MV domains.\nUse FEA simulations to design magnetics; guide high-power high-frequency PCBA designs.\nWork in close coordination with mechanical designers, manufacturing and test engineers to own the complete development cycle.\nQualifications:\nM.S. or Ph.D. in Power Electronics, Electromagnetics or related field.\n2+ years' experience in power conversion design.\nStrong fundamentals in power converter topologies, modulation techniques, and design trade-off analysis.\nExperience working with SiC/GaN devices in high-density designs.\nGood understanding of loss mechanisms in Semiconductor devices, Passive EE components and high-frequency magnetics\nDemonstrated expertise in simulation-driven design and figure-of-merit evaluation across topology, controls, devices, and magnetics.\nKnowledge of EMI/EMC test Standards and Electrical Safety (IEC, UL) Standards.\nStrong analytical skills for interpreting simulation and test data to guide design revisions.\nExcellent written and verbal communications in English\nWillingness and ability to travel up to 10% including internationally\nPlease note: This role requires working on-site 5 days a week. We do not offer hybrid or remote options. \nSalary: $175,000-$205,000/annual DOE and location\nPlease note: This role requires working on-site 5 days a week. We do not offer hybrid or remote options. \nWhile this role is listed for the location above, we may consider candidates in other locations on a case-by-case basis.\nOnsite Collaboration Rationale:\nGiven the highly collaborative and cross-functional nature of hardware, embedded systems, and product development, in-person partnership across engineering and product teams is critical to enabling rapid execution, technical alignment, and successful development outcomes.\nWhy Join Amperesand\nWork on next-generation power infrastructure systems\nHigh ownership and visibility\nCross-functional collaboration\nOpportunity to shape future products and infrastructure\nFast-moving startup environment\nPay Disclosure & Benefits\nCompensation will be determined based on experience, location, and other factors permitted by law. \nThe benefits outlined below apply exclusively to employees located in the United States:\nCompetitive Salary + Incentive Stock Options \nMedical, vision, and dental benefits for employees and their dependents, effective from the start of hire \nCompany paid Basic Life, AD&D, short-term and long-term disability insurance \n401k retirement savings plan through Empower \nEmployees receive paid time off (PTO), paid sick days, and paid company holidays \nCommuter Benefits \n100% paid maternal leave (12 weeks) and paternal leave (6 weeks) \nThe benefits outlined below apply to employees located in Singapore:\nCompetitive Salary + Incentive Stock Options\nGroup medical, hospitalisation and surgical insurance, outpatient or GP coverage, group term life, dental and personal accident insurance\nEmployer and employee Central Provident Fund contributions in accordance with the CPF Act (for Singapore Citizens and Permanent Residents)\nAnnual leave, paid sick leave, hospitalisation leave, and all Singapore public holidays, in line with or exceeding the Employment Act\nCommuter Benefits\nGovernment-paid maternity, paternity, shared parental, and childcare leave in accordance with prevailing Singapore statutory entitlements \nAdditional benefits may be available depending on the role and employment type. Benefits are subject to the terms of applicable company policies and plans.\nCandidate Confidentiality & Information Protection \nAs part of our commitment to protecting confidential and proprietary information, candidates should not discloseor provide Amperesandwith any confidential, proprietary, or trade secret information belonging to a current or former employer or any other third party during the application or interview process. \nPlease do not submitor present employer-owned source code, schematics, designs, technical documentation, internal presentations, customer information, prototypes, or other confidential materials. Candidates should discuss their experience and accomplishments at an appropriate leveland use only information and materials they are authorized toshare. \nEqual Employment Opportunity \nAmperesand is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law. \nAmperesand is also committed to working with and providing reasonable accommodations to individuals with disabilities. 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