Senior Spacecraft Power Systems Architect (Remote)

About Firefly AerospaceFirefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space – anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24-hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.SummaryThe Senior Spacecraft Power Systems Architect responsible for the architecture, power budget management, analysis, and verification of the spacecraft Electrical Power System (EPS). Leads power generation, storage, distribution, and regulation while performing radiation analysis, requirements engineering, and environmental qualification to support all mission phases. Previous spacecraft experience preferred.ResponsibilitiesOwn EPS architecture, power budget development, allocation, and margin management across all mission phasesPerform power system analyses including radiation effects, trade studies, sensitivity, and worst-case analysesDevelop, flow down, and verify power system requirements and cross-subsystem interfacesLead verification, qualification, and acceptance test plans including HIL and GEVS-compliant environmental testing (thermal vacuum, vibration, shock, dynamics)Support vehicle AIT, launch integration, and on-orbit operationsIdentify tasks, resources, and schedules to meet power system objectivesMentor junior engineers on power architecture and systems engineering practicesQualificationsRequiredB.S. in Electrical Engineering, Aerospace Engineering, or related field7+ years in aerospace systems development, testing, integration, or operations5+ years in spacecraft power systems engineering and power budget managementExperience in systems requirements development, verification, and power analyses (including radiation effects)Hands-on experience with power system testing and troubleshootingProficiency with Python for modeling, analysis, or automationProactive self-starter with strong problem-solving and communication skillsDesiredDirect experience with spacecraft EPS (solar arrays, batteries, PCDU) from concept through on-orbit operationsFamiliarity with NASA GEVS or SMC-S-016 environmental testing standardsExperience with FMEA, Fault Tree, or root cause analysisKnowledge of spacecraft grounding, bonding, and EMI/EMC at the system levelV-model methodology or project management experienceWork Environment & ExpectationsThis is a primarily remote position, offering flexibility for day-to-day work. However, employees are expected to be onsite in Cedar Park, TX during their first week for orientation and onboarding. Additionally, this role requires quarterly onsite attendance in Cedar Park, TX for team collaboration, planning sessions, and key business initiatives. Candidates should be comfortable with periodic travel and in-person engagement as part of the role.Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, educational reimbursement, short term disability, and flexible PTO options.To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.