{"id":853159,"url":"https://alion.io/job/radiantnuclear-senior-power-electronics-engineer","title":"Senior Power Electronics Engineer","company":{"id":690814,"name":"Radiant Nuclear","domain":"radiantnuclear.com","url":"https://alion.io/company/radiantnuclear","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":91,"open_postings":26,"ghost_share":0,"stale_share":0.154,"repost_share":0,"time_to_fill_p50_days":83,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["El Segundo, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":158000,"max":219450,"currency":"USD","period":"year","gross":null,"usd_annual":219450},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C++","optional":false}],"status":"live","first_seen_at":"2026-03-17T00:08:27Z","employer_posted_date":"2026-03-17","last_verified_at":"2026-10-17T17:59:28Z","board_verified":true,"closed_at":null,"days_open":214,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":214},"description":"About Radiant\nRadiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.\nAbout the Role\nThe Senior Power Electronics Engineer will play a pivotal role in the design and development of the power electronics of our nuclear-driven high-speed generator. Responsibilities include but are not limited to the design of high-voltage and high-speed generator drives, DC-DC converters for high-voltage batteries, and standalone and grid-tied inverters. You'll join the Power Conversion and Electrical Systems team responsible for converting mechanical energy generated from a nuclear reactor to electrical energy to deliver to customers. You will own power electronics design, analysis, simulation, and component selection. You will partner cross-functionally with top industry engineers at Radiant, as well as vendors and partner organizations, including government agencies. Your efforts will be instrumental in bringing the first nuclear microreactor to market.\nResponsibilities & Duties:\nDesign power electronic systems to convert AC and DC power sources into stable grid compatible voltages and frequencies.\n\nTake ownership and configure our systems active rectifiers, inverters, dc/dc converters.\n\nApply EMI/EMC strategies to the system design, selection of line filters, capacitors, grounding and isolation.\n\nUtilize expertise in design and validation of gate drivers, power stages, magnetics, and controls.\n\nConduct modeling and detailed simulation of inverters.\n\nOwn the design and build a fully functioning inverter autonomously.\n\nPerform circuit formal analysis, e.g., de-rating and worst-case circuit analysis.\n\nOptimize loss, efficiency, and conduct thermal analysis of the inverter.\n\nRequired Qualifications & Skills:\nBachelor's degree in Electrical Engineering, specializing in power electronics.\n\n6+ years of design experience designing high voltage and high-power electronics.\n\nExpert with high voltage power semiconductor selection (Si/SiC/GaN, IGBT, Diodes, MOSFETs), gate driver, and protection circuit design.\n\nStrong experience in high voltage (HV) power electronics design (+800V) including AC/DC inverters, and DC/DC converters.\n\nStrong understanding of different PWM switching techniques, DPWM, ZCS, ZVS.\n\nProficiency with at least one of the common power electronics tools such as PLECS, PSCAD, dSPICE, PSIM, or Simplorer.\n\nExpertise in EMI/EMC filter design for stability, noise rejection, and surviving threat signals.\n\nSolid understanding of capacitor and super-capacitor design and selection, such as electrolytic, film, ceramic, and tantalum.\n\nDesired Qualifications & Skills:\n8+ years of design experience designing high voltage and high-power electronics.\n\nExperience in magnetics design including transformers and inductors for high-frequency power conversion applications.\n\nFamiliarity with functional safety standards (IEC 61508 or equivalent) and fault-tolerant design practices; background in aerospace, defense, or nuclear applications a plus.\n\nStartup experience or ability to work in a fast-paced development environment.\n\nDemonstrated experience in embedded programming with C/C++.\n\nAdditional Requirements:\nMust be willing to work extended hours and weekends as necessary to accomplish our mission.\n\nMust work 100% onsite at El Segundo HQ.\n\nBenefits and Perks\nStock: Substantial incentive stock plan for all full-time employees.\n\nMedical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.\n\nOne Medical: Sponsored memberships for employees and their dependents.\n\nVision: 100% top tier plan coverage + 50% for dependents.\n\nDental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.\n\nVoluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.\n\n8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.\n\nDaily catered lunch. Free snacks and drinks.\n\nFlexible PTO policy. Remote workday allocation.\n\nCompany and team-bonding events, happy hours and in-person camaraderie.\n\nBeautiful El Segundo headquarters close to the Pacific Ocean.\n\nTotal Compensation and Benefits\nRadiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.\nThe best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: .\nWe are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.\nThis position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.","description_format":"text","description_chars":6149,"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":["Equity","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Electrical & Electronic Engineering"],"lifecycle":[{"event":"open","at":"2026-09-13T04:41:29Z"}],"visa":[],"liveness":{"score":17,"band":"cold","label":"Long shot","p_open":1,"p_active":0.616,"p_room":0.28,"age_days":214,"expected_fill_days":83,"reasons":["conf:0","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":219450,"is_top_pay":true},"html_url":"https://alion.io/job/radiantnuclear-senior-power-electronics-engineer","json_url":"https://alion.io/job/radiantnuclear-senior-power-electronics-engineer.json","meta":{"generated_at":"2026-10-17T19:11:19Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":2376,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":690814},"rest":"https://alion.io/mcp/rest/get_company?id=690814"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fradiantnuclear-senior-power-electronics-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fradiantnuclear-senior-power-electronics-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fradiantnuclear-senior-power-electronics-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/radiantnuclear-senior-power-electronics-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fradiantnuclear-senior-power-electronics-engineer"}]}