Leidos is seeking a Cyber Engineer to assist with leading our IA team in Arlington, VA. This position is 100% on-site. The Senior Cybersecurity Engineer supports a DISA mission customer on the CESO ITSS effort. The role analyzes and defines security requirements for multilevel security (MLS) systems and designs, engineers, integrates, and implements secure solutions that meet those requirements to result in a sustained ATO. This position supports secure system operations through documentation,