{"id":3283487,"url":"https://alion.io/job/radiant-nuclear-senior-manager-power-systems","title":"Senior Manager, Power Systems","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":87,"open_postings":26,"ghost_share":0,"stale_share":0.538,"repost_share":0,"time_to_fill_p50_days":53,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Energy","role_family":"Energy","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":208500,"max":284025,"currency":"USD","period":"year","gross":null,"usd_annual":284025},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"ETAP","optional":false},{"name":"Grid-Forming Inverters","optional":false},{"name":"PSCAD","optional":false}],"status":"live","first_seen_at":"2026-07-02T00:37:27Z","employer_posted_date":"2026-07-02","last_verified_at":"2026-10-30T19:53:57Z","board_verified":true,"closed_at":null,"days_open":120,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":120},"description":"About Radiant\nRadiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. The U.S. grid is under growing strain, with power demand accelerating, driving higher utility costs, rising carbon emissions, and interconnection backlogs. Radiant has a solution, transportable, on-site power. Our first reactor, Kaleidos, is 1 megawatt: small enough to be factory-built, transported by land, sea, or air, and deployed wherever power is needed. 1 MW can power 1000 homes for five years. Ship it back and we refuel for a 20 year operating life. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force and has signed pre-order agreements with Equinix, with deployments beginning in 2028.\nAbout the Role\nRadiant is seeking a talented Senior Manager, Power Systems, to build and lead the team that designs, models, and validates electrical power systems for our nuclear microreactor platform. You will manage a team of power systems and power electronics engineers, set technical direction and priorities, and ensure the team delivers safe, stable, and reliable power across grid-connected, islanded, rapidly deployable, and space-based environments.\nIn this role, you will guide your team through power system studies from early architecture tradeoffs through detailed modeling, testing, and system validation, while also driving the development of in-house power electronics, including converters, inverters, and generator controls, needed to support both terrestrial and space-based reactor platforms. This role is central to commercializing Earth's first mass-produced portable nuclear reactors, and to extending that capability beyond Earth.\nResponsibilities & Duties\nBuild, manage, and grow a team of power systems and power electronics engineers, including hiring, mentoring, and performance management.\n\nSet team priorities and roadmaps in partnership with leadership from power conversion, controls, nuclear, and software.\n\nCommunicate progress, risks, and results to executive leadership and cross-functional stakeholders.\n\nLead the team that owns power system architecture, single-line diagrams, and synchronization strategy for single and multi-reactor configurations, grid-connected and islanded.\n\nDirect FMEAs and disturbance analysis (load steps, faults, breaker operations, loss-of-generation) to validate system stability and protection behavior.\n\nOwn architecture, sizing, and integration of off-the-shelf hardware for energy storage and power conversion.\n\nLead in-house power electronics development (converters, inverters, generator controls) to support earth and space-based reactor platforms.\n\nOversee SIL/HIL and system-level testing, commissioning, and regulatory/power-quality compliance.\n\nRequired Qualifications & Skills\nB.S. in Electrical Engineering with an emphasis in power systems or control systems.\n\n8+ years of experience designing power systems for generation, microgrids, or mission-critical power systems.\n\n3+ years of experience in a formal people management role.\n\nExperience with sizing and integrating high-voltage battery systems with power electronics.\n\nTrack record developing power electronics for high-power, medium-voltage equipment, including transformers, switchgear, inverters, active rectifiers, DC/DC converters, and generator controls.\n\nBackground in leading teams with power system modeling and simulation tools (e.g., PSCAD, ETAP, PSS®E, Simulink, or equivalent).\n\nSolid understanding of power system control modes (grid-forming, grid-following, droop control).\n\nExperience in analyzing system stability, protection behavior, and fault response in complex electrical systems.\n\nProven ability to lead and develop engineering teams while remaining technically hands-on.\n\nAbility to clearly communicate technical concepts and results to cross-functional teams and leadership.\n\nDesired Qualifications & Skills\nM.S. in Electrical Engineering or related discipline.\n\n5+ years of experience in a formal people management role.\n\nExperience with islanded power systems supporting critical loads.\n\nFamiliarity with interconnection requirements, grid codes, and relevant IEEE or utility standards.\n\nExperience in modeling dynamic loads and fast-changing electrical demand.\n\nExposure to nuclear, aerospace, defense, or other highly regulated industries.\n\nTrack record of building or scaling an engineering team on complex, safety-critical programs.\n\nAdditional Requirements\nMust be willing to work extended hours and weekends as necessary to accomplish our mission.\n\nMust work 100% onsite at Radiant's 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. 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