Leidos is seeking a skilled and driven Endpoint Security as a Service (ESS) Engineer and Systems Administrator to join our team at the Washington Navy Yard - where innovation meets mission. What You'll Do As an ESS Engineer and Systems Administrator, you won't just maintain systems - you'll elevate them. You'll be part of a collaborative team that installs, configures, and fine-tunes advanced security solutions to ensure critical network infrastructure runs at peak performance. You'll also eva