CACI is looking for an experienced Space Vehicle Flight Software Systems Engineer to work with the flight software of NASA's Human Landing System (HLS), i.e., lunar landers, for transporting astronauts to and from the lunar surface. This exciting software systems engineering position involves insight/oversight of human-rated flight software including evaluations of concepts, analysis of flight software requirements and design, assessments of software architecture and code, and evaluations of verification tests and certification. Special emphasis will be placed on software safety, software process adherence, software verification, and certification for flight readiness. Typical areas of focus will be data network and channelization, fault management, mission sequencing, aborts, emergency responses, redundancy management, etc. Vehicle system domains include crew systems; displays; avionics; command and data handling; environmental control and life support (ECLSS); power; propulsion; thermal; guidance, navigation, and control; communications and tracking; and docking. This work requires collaboration with Commercial Spacecraft prime contractors. This position requires a self-motivated, capable person with strong verbal and written communication skills. In addition to outstanding technical expertise, the individual must be very people savvy, have strong customer relationship skills, possess a positive team-player attitude, be flexible and willing to take on new assignments and responsibilities as they arise. Finally, the most qualified candidate will be an articulate speaker able to communicate complex technical ideas in a convincing manner, must share our passion for our Nation's Space Program, and share in the excitement of developing future human-rated space vehicles.