{"id":119734,"url":"https://alion.io/job/mainspring-energy-staff-electrical-engineer-power-electronics","title":"Staff Electrical Engineer - Power Electronics","company":{"id":5556,"name":"Mainspring Energy","domain":"mainspringenergy.com","url":"https://alion.io/company/mainspring-energy","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":83,"open_postings":20,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":72,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Hardware","role_family":"Hardware","seniority":"staff","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Menlo Park, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":181000,"max":213000,"currency":"USD","period":"year","gross":null,"usd_annual":213000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-04-07T22:04:15Z","employer_posted_date":"2026-04-07","last_verified_at":"2026-11-01T02:37:46Z","board_verified":true,"closed_at":null,"days_open":207,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":206},"description":"Job Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.\nWe have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.\nResponsibilities\nDesign custom power electronics hardware that enables key functions of our Linear Generator\nBring-up, validate, and qualify your power electronics designs\nTroubleshoot complex hardware issues that arise in the test lab, production floor, and fielded units\nCollaborate with the new production introduction team and external suppliers to improve designs for manufacturability and testability\nPartner with reliability engineers to further drive up electrical hardware reliability\nServe as an expert on the hardware systems that you own\nQualifications\nBachelor’s degree, or higher, in Electrical Engineering\n8 years of experience developing power electronics technologies\nExcellent electronics design fundamentals; ability to take concept level design details, select components, and produce a schematic\nExamples of taking ownership of a power electronics design project\nCircuit board design experience\nFamiliar with schematic capture and power converter circuit modeling/simulation tools\nKnowledge of power electronics control theory\nProficiency with EE tools (Oscilloscopes, Power Analyzers, Network Analyzers, Signal Generators etc.)\nExperience with power semiconductor selection, gate drive, and protection circuit design\nProven ability to work independently on an electronics design project\nClear verbal and written communication skills\nA passion for hands-on hardware development\nA “collaborate-first” mindset and have successfully communicated across a range of teams and personalities\nNice-to-haves\nExperience designing high voltage (480VAC or 800VDC range) systems \nExperience designing kW-level power electronics\nExperience in the full hardware development life cycle, from requirements development to manufacturing support\nExperience working at a startup or rapid development environment\nExperience with Altium","description_format":"text","description_chars":2456,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Electrical & Electronic Engineering","Power Grid","Alternative Fuels"],"lifecycle":[{"event":"open","at":"2026-04-07T22:04:15Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 22 · green card filings: 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