System Security Engineer, Space

About the Role

We're hiring a Systems Security Engineer to own the architecture for space programs. You'll be the technical security authority on one or more space programs, working directly with subsystem Responsible Engineers (REs) and Government customers to ensure systems hold up against real threats. This is an engineering role focused on making the system secure, not a compliance role. You'll take a program from customer need to on-orbit operations, turning threat intelligence and mission requirements into a security architecture, and verifying that the built system matches the design. Your work will cover the entire system: spacecraft bus, payload, command and telemetry links, ground segment, and supply chain.

Key Responsibilities

• Own the end-to-end security architecture for assigned space systems, across the space, ground, link, and user segments.
• Derive security requirements from customer needs, threat assessments, and applicable space security policy, then flow them down to subsystem specifications.
• Design protections for command and telemetry links, including authentication, encryption, anti-replay, and key management approaches.
• Define the onboard security foundation: secure boot, hardware root of trust, firmware and software integrity, memory protection, and secure update paths for systems that cannot be physically touched after launch.
• Build and maintain threat models and attack trees for the full mission, and use them to drive design decisions.
• Partner with flight software, avionics, RF, and ground REs to turn security requirements into working implementations, then review designs and code against them.
• Develop and run security verification at every integration level: unit, subsystem, flatsat, spacecraft, and end-to-end with the ground segment.
• Work with internal and external red teams and assessment teams to find weaknesses in products and integrated third-party components, then drive fixes to closure.
• Assess supplier hardware and software for supply chain risk and set security requirements for vendors.
• Own the security content at major milestones: SRR, PDR, CDR, TRR, and PSR.
• Brief security architectures to Government customers, program leadership, and technical reviewers.
• Partner with ISSOs and ISSMs so design decisions support accreditation.
• Help build reusable security patterns, reference architectures, and tooling across Anduril's space programs.

Requirements & Tech Stack

• Experience designing security architectures for complex, multi-segment systems (spacecraft bus, payload, ground segment, RF/comms links).
• Ability to decompose system-level security architecture into subsystem-level requirements that engineering teams can build and test against.
• Hands-on understanding of threat modeling and the ability to translate threat intelligence into concrete design decisions.
• Experience working across disciplines: flight software, avionics, RF/comms, ground systems.
• Familiarity with the full system lifecycle from requirements through verification and on-orbit operations.
• Experience with supply chain security as it applies to space or defense systems.
• Ability to make and defend engineering trade-offs where security competes with schedule, mass, power, or cost.
• Direct experience working with U.S. Government customers on classified or sensitive programs.
• Active security clearance (almost certainly TS/SCI given the "space programs" and government customer context).
• Strong communication skills.
• CCNP certification or equivalent advanced networking credential.

Qualifications

• The raw description did not contain a separate "Qualifications" section, but listed skills and experience under "Requirements". These have been moved to the "Requirements & Tech Stack" section above.