Senior Avionics Systems Engineer - Millennium Space Systems

Senior Spacecraft Command and Data Handling (C&DH) EngineerCompany: Millennium Space SystemsMillennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have direct impact to global security, like missile warning and Earth observation.Our team is curious, bold and innovative. We take risks, innovate and explore new techniques and technologies. We influence change because we challenge the status quo.

And when we watch our satellites launch, we know each one of us made it happen.Job Summary: As a Senior Spacecraft Command and Data Handling (C&DH) Engineer, you will serve as a primary technical authority for the electrical hardware and avionics architectures critical to Millennium's space vehicles. You will drive the strategic design of vehicle architectures, ensuring they meet complex mission requirements while optimizing for performance, manufacturability, and cost. You thrive with a high degree of autonomy and responsibility and can communicate technical concepts clearly and concisely to both technical and non-technical stakeholders.This position's internal job code is EE Sys Design Engineer. Our team is currently hiring for Levels 4-5.Level 4: Focuses on technical leadership of specific programs/portfolios.

You will act as a subject matter expert (SME) for C&DH, driving complex technical designs, managing high-stakes trade studies, and providing critical technical oversight during integration and testing to ensure mission success.Level 5: Focuses on technical strategy and organizational impact of the C&DH group. You will serve as a primary technical authority across multiple programs, establishing engineering best practices, defining long-term technical roadmaps, and mentoring the next generation of engineers to scale the company's technical capabilities.Position Responsibilities:Architect C&DH subsystem architectures that drive system-level design decisions and ensure alignment with mission objectives, constraints, and fault management requirementsLead the selection and trade analysis of avionics architectures to balance mission requirements with performance, power, mass, and costDrive the definition of requirements, interface control documents, and verification activitiesDirect high-fidelity analyses for data budgets, signal integrity, clock drift, jitter, and EMI/EMC compatibility to guarantee design margins and reliabilityOwn vendor selection and trade studies, producing make/buy recommendations that balance technical risk, schedule, cost, and long-term lifecycle supportLead the identification and resolution of complex technical issues related to avionics and electrical hardware throughout the design, integration, and testing phasesCollaborate on Fault Detection, Isolation, and Recovery (FDIR) strategies, ensuring architectures are resilient and providing technical expertise for mission operations and system health assessmentMentor junior and mid-level engineers to foster technical excellence and scale the group's engineering capabilitiesOther duties as assignedBasic Qualifications (Required Skills/Experience):Bachelor's degree in Electrical, Computer, Aerospace, or a related discipline and 9 or more years' related work experience or an equivalent combination of technical education and experience9+ years of experience with spacecraft communication protocols such as SpaceWire, Ethernet, RS-422/485, LVDS7+ years of experience in the design, analysis, and integration of spacecraft electrical hardware or complex avionics systemsThis position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S.

Citizenship. A final U.S. Security Clearance Post-Start is requiredPreferred Qualifications (Desired Skills/Experience):Level 5: 14 or more years' related work experience or an equivalent combination of technical education and experienceExperience as a Responsible Engineering Authority (REA) or Lead Engineer on complex space programsDeep familiarity with industry standards and DoD/government cybersecurity implementation for space assetsExperience in high-rate manufacturing environmentsAdvanced degree (M.S. or Ph.D.) in a relevant engineering disciplineOutstanding communication and presentation skills