Demo

Network Systems Administrator

MANTECH
Los Angeles, CA Full Time
POSTED ON 11/19/2025 CLOSED ON 12/18/2025

What are the responsibilities and job description for the Network Systems Administrator position at MANTECH?

MANTECH seeks a motivated, career and customer-oriented Network Systems Administrator I to join our team in El Segundo, 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 with local customers and provide IT related support to quickly resolve problems.
  • Analyze and troubleshoot system anomalies to ensure optimum equipment performance.
  • Manage data backup library to include storage of tapes, disks and other magnetic media at the customer’s location and off-site storage facilities as required.

Minimum Qualifications

  • Bachelor’s degree, an additional 4 years of experience might be substituted for a degree
  • 2 years total related experience.
  • 1 years of relevant SCI or SAP experience.
  • Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level 2 within 6 months of the date of hire.
  • Requires travel within the organizational Area of Responsibility (AOR) (note - could be extensive and will include both air and ground transportation).

Preferred Qualifications

  • Working knowledge of Local Area Network (LAN) and Wide Area Network (WAN) technologies and data backup technologies to include communication security (COMSEC) integration
  • Working knowledge of JAFAN 6/0, DCID/JAFAN 6/3, DCID/JAFAN 6/9, and Joint DODIIS/Cryptologic SCI Information Systems Security Standards, Common Criteria, and System Security Policy as they relate to C&A for Legacy systems.
  • Working knowledge and current relevant experience with PL1 & PL2 systems; Experience with PL3 & PL4 cross domain solutions is a plus.
  • Ability to work in a dynamic environment and effectively interact with numerous DOD, military/civilian personnel and industry partners.

Clearance Requirements

  • Current Top-Secret Clearance with SCI Eligibility
  • Eligibility for access to Special Access Program Information
  • Willingness to submit to a Counterintelligence polygraph.

Physical Requirements

  • Must be able to remain in a stationary position 50%.
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
  • Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.
  • Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

Salary.com Estimation for Network Systems Administrator in Los Angeles, CA
$130,580 to $151,436
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