Network System Administrator

California
2026-05-17
Verified Listing
software

Description

About This Jobs Network/System Administrator II Location: El Segundo, CA Overview ManTech is looking for a driven, career-focused Network/System Administrator II to become part of our team. This p...

The Space & Details

About This Jobs

Network/System Administrator II

Location: El Segundo, CA

Overview

ManTech is looking for a driven, career-focused Network/System Administrator II to become part of our team. This position delivers essential daily support for Collateral, Sensitive Compartmented Information (SCI), and Special Access Programs (SAPs) within a dedicated office setting, ensuring both security and operational reliability.

Requirements

  • A Bachelor's degree in a relevant field (an additional 4 years of experience may be substituted for the degree).
  • At least 3 years of overall experience.
  • At least 2 years of specific experience supporting SCI or SAP environments.
  • Must fulfill DoD Directive 8570.01-M IAT Level II certification standards (such as Security+ CE, CCNA, or CySA+) within 6 months of starting.
  • Familiarity with installing and maintaining secure MS Windows network environments and internet protocols (TCP/IP, HTTPS).
  • Ability to diagnose complex system issues and manage hardware/software configuration.
  • An active TS/SCI clearance or TS with SCI eligibility. Candidates must qualify for access to Special Access Programs.
  • Willingness to undergo a polygraph examination is mandatory.

Preferred Qualifications

  • Relevant Windows professional certifications.
  • In-depth knowledge of Microsoft Windows Server management, Microsoft Exchange, and related hardware.
  • Practical understanding of LAN/WAN technologies, COMSEC integration, and data backup solutions.
  • Familiarity with JAFAN 6/0, ICDs, and Joint DODIIS/Cryptologic SCI Information Systems Security Standards.

Physical Requirements

  • Ability to remain in a stationary position for 50 percent of the time.
  • Occasional movement within the office to reach file cabinets, office machines, and to set up computer equipment.
  • Regular communication with colleagues, management, and customers, which may include giving presentations.

How to Apply

Apply Now: https://www.mantech.com/careers

Location

California