MANTECH seeks a motivated, career and customer-oriented Network/System Administrator II to join our team in El Segundo, CA. The Network/System Administrator II will leverage their strong technical background to support Special Access Programs (SAPs) and other classified networks. You will provide essential day-to-day support for Collateral, Sensitive Compartmented Information (SCI), and SAP activities, ensuring secure and reliable operations within a dedicated office environment. Responsibiliti