Network System Administrator

MANTECH seeks a motivated, career and customer-oriented Network System Administrator (NSA) - II to join our team in El Segundo, CA.

The primary function of the Network/Systems Administrator-II is to work with Special Access Program (SAPs) and other classified networks supporting SSC 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. This role requires full-time, on-site presence five days a week.

Responsibilities include but are not limited to:

• Install, maintain, audit, and support a secure MS Windows network environment and limited web/data application services.
• Maintain internet applications and protocols including IP, TCP, HTTP, HTTPS, FTP, and SSL.
• Maintain file servers, firewalls, network access, Security Monitoring Systems, and comprehensive system documentation.
• Interface directly with local customers to provide rapid technical support and resolve IT operational issues.
• Analyze and troubleshoot system anomalies to ensure optimum hardware and network performance.
• Perform scheduled maintenance, hardware replacements, firmware updates, and baseline configuration modifications.
• Manage data backup libraries and execute scheduled backups, including media handling at local and off-site locations.

Minimum Qualifications:

• Bachelor’s degree in a related technical field (or an additional 4 years of relevant experience in lieu of a degree).
• 3+ years of total system administration experience.
• 2 years supporting SCI or SAP environments.
• Active DoD 8570.01-M Information Assurance Technician (IAT) Level II certification (e.g., Security+ CE, CCNA, CySA+, or CND) or ability to obtain within 6 months of hire.
• Proven experience deploying, configuring, and maintaining secure Microsoft Windows network operating environments.
• Demonstrated technical capability troubleshooting network protocols, system anomalies, and hardware malfunctions.

Preferred Qualifications:

• Applicable Microsoft Certified Windows professional credentials aligned with enterprise operational requirements.
• Working knowledge of JAFAN 6/0, DCID/JAFAN 6/3, DCID/JAFAN 6/9, and Joint DODIIS/Cryptologic SCI standards.
• Practical experience with PL1 and PL2 systems, as well as PL3 and PL4 cross-domain solutions.
• Familiarity with LAN/WAN infrastructure and COMSEC integration practices.

Clearance Requirements:

• An active TS/SCI or TS with SCI eligibility.
• Candidates must be eligible for access to Special Access Programs.
• Willingness to submit to a polygraph is required.

Physical Requirements:

• Must be able to remain in a stationary position for extended periods in closed-area office environments.
• Must be able to occasionally move about inside the office to access safes, file cabinets, and server racks.
• Must be able to lift, move, and install computer and IT-related equipment weighing up to 50 lbs.
• Requires travel within the organizational Area of Responsibility (AOR), which may include both air and ground transportation.