Principal Software Security Engineer

ABOUT ROCKET LAB Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more – all with the goal of opening access to space. The rockets and satellites we build and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations.   Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.  SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners including NASA, the Space Development Agency, and the U.S. Space Force. Whether it’s a single high-performance spacecraft, constellation, or the vertically integrated components that help them get to space — our world class Space Systems team is empowering some of the boldest and most ambitious space missions.  PRINCIPAL SOFTWARE SECURITY ENGINEER  Based out of Rocket Lab's site in Littleton, Co, we are seeking a Principal Software Security Engineer to lead security architecture and implementation across out integrated hardware-software systems. This role focuses on securing complex cyber-physical systems including embedded platforms, avionics, ground stations, and space vehicle infrastructure.  WHAT YOU'LL GET TO DO : Systems Security Architecture Design and implement security architectures for integrated hardware/software systems  Secure embedded systems, firmware, FPGA implementations, and hardware interfaces Develop security controls for satellite buses, payload systems, and ground segment infrastructure Conduct hardware security assessments including supply chain risk analysis and component-level security Cyber-Physical Security  Establish security requirements for RF communications, telemetry, and command systems Implement cryptographic key management for space and ground systems Secure network infrastructure, including air-gapped and classified environments Design secure boot chains, trusted execution environments, and hardware root of trust implementations Technical Leadership  Lead cross-functional security reviews involving hardware, firmware, and software teams  Mentor engineers on systems security best practices across the full stack Drive security integration into DevSecOps pipelines and hardware development Interface with government customers on security accreditation requirements (RMF, ICD 503, NIST 800-53) Compliance & Risk Management Ensure compliance with DFARS, CMMC, ITAR, and aerospace security standards Conduct threat modeling for hardware/software attack surfaces Perform security risk assessments for mission critical systems  Support security certification and accreditation activities YOU’LL BRING THESE QUALIFICATIONS: Bachelor's degree in Computer Science, Information Security, or a related field  12+ years of experience in Cybersecurity with focus on systems, embedded or infrastructure security Experience with hardware security principles (secure boot, TPM, HSM, side-channel attacks) Experience securing embedded Linux, RTOS, or bare-metal systems Demonstrated knowledge of cryptography implementation in resource-constrained environments  Expertise in network security, including air-gapped architectures and secure enclaves Active Secret clearance, or ability to obtain and maintain one U.S. citizenship is required, due to program requirements THESE QUALIFICATIONS WOULD BE NICE TO HAVE: Master's degree in Computer Science, Information Security, or related field  Active TS/SCI clearance Experience with aerospace, defense, or space systems security Knowledge of satellite communication protocols and RF security  Familiarity with DO-178C, DO-254, or similar safety-critical development standards Hardware reverse engineering or penetration testing experience  Certifications: CISSP, GIAC (GPEN, GXPN), CEH, or equivalent  Experience with FPGA security or hardware design tools (Vivavo, Quartus) ADDITIONAL REQUIREMENTS: Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception, and the ability to focus Regularly required to sit, use hands and fingers, operate computer keyboard and controls, and communicate verbally and in writing Must be physically able to commute to buildings  Occasional exposure to dust, fumes and moderate levels of noise The expected salary range for the position is displayed in accordance with the Colorado Equal Pay for Equal Work Act. Final agreed upon compensation is based upon individual qualifications and experience. Base salary is only one part of Rocket Lab’s compensation package for this role. You may be eligible for company stock, or cash incentives, and can purchase discounted stock through Rocket Lab’s Employee Stock Purchase Program. Employee benefits also include medical, dental, and vision insurance coverage; 401(k) retiremen