Build software for UUVs that navigate in the dark, think independently, and must complete the mission. Failure is not an option. Leidos is seeking an Autonomous Mission Systems Software Engineer to help develop and evolve the Sea Dart UUV product line, a family of undersea autonomous systems built to operate independently, coordinate with operators, and execute complex missions in denied environments. This role sits at the intersection of autonomy, mission planning, and command-and-control. Y