Senior Spacecraft Avionics Security Engineer - Millennium Space Systems

Senior Spacecraft Avionics Security Engineer - Millennium Space Systems Company: Millennium Space Systems Millennium 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 :  The Senior Spacecraft Avionics Security Engineer is the technical authority for all space vehicle and avionics product ‑level security of Millennium’s space systems. You will design, implement, and sustain cryptographic subsystems, red/black separation, and end‑to‑end security architectures that protect hardware, software, data, and communications throughout the entire vehicle lifecycle and drive security requirements, processes, and verification at the product and mission level. This position's internal job code is EE Sys Design Engineer. Our team is currently hiring for Levels 4-5.

Responsibilities: Mission and Product‑Level Security Management Define vehicle‑wide security architecture, select and integrate space‑qualified crypto devices, implement secure boot, key storage, and red/black isolation  Develop and maintain system security requirements, verification plans, and certification artifacts (DoD RMF, customer security clauses) Develop threat assessment models and tailored approaches to counter them Support product‑level security requirements definition, implementation, verification, and validation across the full lifecycle Work with software, hardware, and systems engineering teams to develop new processes and procedures for enhanced cybersecurity implementations at both the product and system level   Networking Systems Engineering Lead design, requirements management, and integration of space‑vehicle and constellation‑level networks (on‑board LANs, inter‑satellite mesh, space‑to‑ground links) Define and maintain CONOPS, ICDs, and requirements for routing, virtualization, VPN tunneling, VLAN segmentation, and QoS across heterogeneous RF/optical links. Apply enterprise networking principles (WAN/LAN/WLAN, IPv6, MPLS, IPsec) to distributed space systems while preserving red/black separation Direct integration and verification activities that validate networking implementations Stakeholder & Business Development Support Lead customer interactions on product and system level cybersecurity for space systems Develop presentation content and brief customers on Millennium product security approaches Assist the business‑development team in crafting compliant proposals that meet customer cybersecurity and networking requirements Supplier & Government Coordination Define security and networking requirements for component/subsystem suppliers; review supplier deliverables; liaise with government agencies, customers, and industry groups to influence standards and risk‑acceptance processes Other duties as assigned Basic Qualifications (Required Skills/Experience): Bachelor of Science degree in Engineering (with a focus in Electrical, Mechanical or Aeronautical), Computer Science, Data Science, Mathematics, Physics, Chemistry or non-US equivalent qualifications directly related to the work statement 5+ years experience working spacecraft/product security Technical understanding of SV avionics architectures Technical understanding of SV flight software architectures to include embedded Linux Technical understanding of product cybersecurity features to include root of trust, secure boot, etc. Familiarity with DoD Risk Management Framework (RMF)  This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. A