Los Angeles, CA 90012 • (10.4 miles) • Full Time • 9/9/2025

ManTech seeks a motivated, career and customer-oriented Network System AdministratorIII to join our team in Los Angeles, CA.The primary function is working with Special Access Program (SAPs) and other classified networks supporting SMC Directorates and/or AFSPC Operational Units. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.Responsibilities include but are not limited to:Install, maintain, audit and support a secure MS Windows network environment and limited web/data application service.Maintain internet applications and protocols IP, TCP, HTTP, HTTPS, FTP, & SSL.Maintain file servers, Firewalls, network access, Security Monitoring Systems and system documentation as required.Interface w

Los Angeles, CA 90012 • (10.4 miles) • Full Time • 8/31/2025

MANTECH seeks a mission-focused Cybersecurity System Security Engineer III to support Special Access Programs (SAPs) aligned with SSC and AFSPC acquisition initiatives.In this on-site role located in El Segundo, CA, you will work closely with security professionals to safeguard vital national security systems while ensuring compliance with NIST, DoD, and SAP cybersecurity frameworks.Responsibilities include but are not limited to:You will lead advanced system security engineering initiatives, helping ensure that acquisition systems meet security and accreditation requirements from design through deployment.Lead a team of System Security Engineers and Certification & Accreditation Analysts responsible for safeguarding U.S. and allied national security interests. Provide technical direction,