The Senior Spacecraft Systems Engineer – Software is responsible for translating system-level operational concepts, customer requirements, and architecture into detailed software requirements, verification strategies, and integrated technical solutions for complex embedded systems. This role serves as a critical bridge between Systems Engineering and Software Engineering, ensuring requirements are properly decomposed, traceable, testable, and aligned to overall program objectives. The position is organizationally aligned within the Systems Engineering function while working closely day-to-day with the Software Engineering team to support planning, development, integration, and verification activities. This role is instrumental in defining software verification approaches, required hardware/software configurations, and ensuring system functionality meets mission and performance objectives.