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Senior IT Systems Administrator

MANTECH
Chantilly, VA Full Time
POSTED ON 12/24/2025
AVAILABLE BEFORE 1/31/2026
MANTECH seeks a motivated, career and customer-oriented Senior IT Systems Administrator to join our team in Chantilly, VA.

Responsibilities Include But Are Not Limited To

  • Providing end-user support to personnel utilizing ITD IT systems.
  • Triaging help desk tickets for a broad range of service requests to include file transfers, assistance with desktops and peripheral equipment, account management, and other user-focused incidents.
  • Installation, accountability, maintenance, and decommission of physical desktop, data center equipment and other IT assets.
  • Performing general operations & maintenance for COTS/GOTS hardware and software.

Minimum Qualifications

  • Bachelor’s degree in Computer Science, Systems Engineering, or other IT-related discipline and seven (7) years of relevant experience in Information Technology.
  • In lieu of a Bachelor’s: Associates’ degree and 10 years of relevant experience in Information Technology.
  • Current DoD 8570 IAT II certification (Security , SSCP, or equivalent) or ability to obtain one within 180 days.
  • Experience with Windows and Linux operating systems.
  • Experience providing help-desk end-user support for common desktop and server issues.
  • Experience installing and configuring physical equipment.
  • Ability to provide technical support in the management of networks, software, hardware, configurations and architectures.
  • Experience and ability to perform software installations and upgrades to operating systems and layered software packages.
  • Experience with Intelligence Community Directive (ICD) 503 and system Assessment and Authorization (A&A) procedures/processes.
  • Experience writing clear, concise, and user-friendly technical and training manuals or similar documentation.

Clearance Requirements

  • Must have a current/active TS/SCI w/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.
  • 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 Senior IT Systems Administrator in Chantilly, VA
$110,970 to $139,603
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