Sr Guidance, Navigation & Controls Engineer

Sierra Space Careers: At Sierra Space , we build the missions and systems that keep our world secure in the domain above Earth. Sierra Space team members share a spirit of innovation and collaboration and a belief that we can deliver on the boldest missions in space today. Together with our customers, we aim to safeguard our nation, sustain human presence in space, and secure the freedom of operations in low Earth orbit and beyond. Our success is measured by the trust of those who rely on what we build and deliver, and our technologies keep the United States and its allies mission-ready throughout space. We are mission-driven, and together, we are an extraordinary team. About the Role Sierra Space is seeking a Sr Guidance, Navigation & Control Engineer to lead the design, development, and verification of advanced GNC systems for spacecraft applications. This senior-level role requires extensive experience in GNC algorithm design, sensor and actuator selection, and system-level integration. The selected candidate will be responsible for architecting integrated GNC designs, creating detailed plans for program execution, and collaborating with multidisciplinary teams to ensure performance across spacecraft subsystems. This role offers the opportunity to drive innovation and technical excellence in aerospace technology. In this role, you will design and implement advanced guidance and control algorithms, including optimal control and autonomous navigation techniques using LIDAR, vision, GPS, and RGPS systems. You will lead the end-to-end design and development of GNC algorithms, architect integrated subsystem designs, and quantify performance impacts. Additionally, you will develop Integrated Master Schedule (IMS) tasking, long-term plans, and Gantt charts for program execution, supporting internal and external proposals and Statements of Work (SOWs). You will perform sensor and actuator selection and sizing based on program requirements, leveraging and developing relev