This role is responsible for developing network and security architectures, creating firewall designs and schematics, building and integrating supporting server infrastructure, and coordinating testing and validation activities with ADMS stakeholders. June 18, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.