Network System Administrator

MANTECH•Los Angeles, CA

20h•$107,900 - $179,400•Onsite

About The Position

MANTECH seeks a motivated, career- and customer-oriented Network System Administrator (NSA)-II to join its team in El Segundo, California. The role supports Special Access Program (SAP) and other classified networks for SSC Directorates and/or AFSPC Operational Units, providing day-to-day support for Collateral, Sensitive Compartmented Information (SCI), and SAP activities. The position requires full-time, on-site presence five days a week.

Requirements

Bachelor’s degree in a related technical field, or an additional four years of relevant experience in lieu of a degree.
At least 3 years of total system administration experience.
At least 2 years supporting SCI or SAP environments.
Active DoD 8570.01-M Information Assurance Technician (IAT) Level II certification, such as Security+ CE, CCNA, CySA+, or CND, or ability to obtain it within six 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.
Active TS/SCI clearance or TS clearance with SCI eligibility.
Must be eligible for access to Special Access Programs.
Willingness to submit to a polygraph.
Must be able to remain stationary 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 pounds.
Must be able to travel within the organizational Area of Responsibility, potentially by air and ground transportation.

Nice To Haves

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.

Responsibilities

Install, maintain, audit, and support a secure Microsoft 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.