Electrical Engineer Own the Design of Scalable Spacecraft Power Systems!San Francisco, CA | OnsiteOpportunity Summary:A well-funded early-stage space company is seeking a Senior Electrical Engineer to take the lead on developing and delivering flight-ready power subsystems for next- spacecraft platforms. In this role, youll be responsible for architecting and validating robust power electronics, including DC-DC converters, power distribution units, and energy storage systems, that serve as the electrical core of scalable orbital infrastructure. This is a rare opportunity to step in early, contribute to hardware that's already flying with real customers, and influence spacecraft power systems from first principles through production. Youll join a nimble, fast-growing team thats tackling the complexities of building space systems at scale. Our current work spans both commercial and government contracts, with a strong emphasis on modularity, reliability, and manufacturability. If youre looking for a high-impact role that blends deep technical ownership with hands-on engineering, this is your chance to shape the future of power systems in orbit.About Us:Were designing a fundamentally new spacecraft architecture aimed at simplifying how satellites are built, deployed, and operated. Our compact, modular platform reimagines traditional bus systems, integrating power, control, and communications into a streamlined form factor built for mass production. With a growing portfolio of security and commercial customers, and an experienced founding team drawn from top aerospace and technology companies, we are committed to solving the biggest bottlenecks in scalable space access, starting with intelligent, reliable power.Job Duties:Lead the design and validation of spacecraft power subsystems including isolated/non-isolated DC-DC converters, power regulation networks, and distribution unitsOwn development of battery systems, including charge control, protection circuitry, and health monitoringImplement MPPT (maximum power point tracking) techniques for solar array optimizationCreate detailed schematics and multilayer PCB layouts using Altium or similar ECAD toolsSupport bring-up, integration, and qualification of flight hardware including environmental and functional testingDrive analysis of power budgets, efficiency trade-offs, and system-level energy strategiesCollaborate closely with avionics, mechanical, and embedded software teams to ensure seamless power delivery across subsystemsApply design standards for space-readiness including thermal limits, launch vibration, and radiation toleranceQualifications:BS or MS in Electrical Engineering or related technical field3+ years of hands-on experience designing and testing power electronics or embedded power systemsSolid foundation in analog design, switch-mode power supplies (SMPS), and energy storage technologiesFamiliarity with simulation tools (LTspice, PLECS, etc.) and ECAD platforms (Altium, KiCAD, etc.)Demonstrated ability to debug board-level issues and support system integrationUnderstanding of power reliability in harsh environments including thermal extremes and radiationComfortable operating independently in a fast-moving, mission-driven hardware environmentExperience:Previous design experience with flight-ready power systems for CubeSats, microsats, or space-rated electronicsExperience working with modular spacecraft platforms or scalable satellite bus architecturesFamiliarity with lithium-ion battery chemistries and space-based charge control profilesExposure to government, dual-use, or security-focused space programsPrior work in early-stage startups with small, agile engineering teamsWhy Join Us?Lead development of core flight hardware from day oneHelp shape the electrical and systems architecture of a new spacecraft platformCollaborate with experienced engineers solving some of space's hardest problemsOpportunity to grow with a high-upside pre-seed startup already working with active customersEquity in a growing space ventureStrong PTO policyMedical, dental, and vision coverageFlexible and collaborative work environmentCompensation Details:$120,000 - $150,000 plus equity#LI-AV #J-18808-Ljbffr