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System Administrator with Security Clearance

MANTECHColumbia, MD🇺🇸United StatesPosted Jul 28, 2026

Why This Role Stands Out

Advance your career as a System Administrator with a TS/SCI clearance at MANTECH, where you'll gain valuable experience managing critical IT systems and optimizing performance in a hybrid environment. This role is ideal for a seasoned professional with strong RHEL and Windows expertise who thrives on problem-solving and contributing to a reputable organization.

Quick Overview

Seniority
Mid Senior
Employment type
Employee
Work mode
Hybrid
Location
Columbia, MD, United States
Posted
7 weeks ago
AWS

Job Description

MANTECH seeks a motivated, career and customer-oriented System Administrator to join our team in Columbia, Maryland. Responsibilities include but are not limited to:

  • Provide Tier 2 and Tier 3 problem identification, diagnosis and resolution.
  • Manage the daily activities of configuration and operation of IT systems.
  • Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
  • Provide support for the escalation and communication of status to agency management and internal customers.
  • Optimize system operations and resource utilization, and perform system capacity analysis and planning.
  • Provide support for the dispatch system and hardware problems and remains involved in the resolution process.
  • Configure and manage Linux and Windows (or other applicable) operating systems, install/loads operating system software, troubleshoot.
  • Maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.

Minimum Qualifications

  • Bachelor's degree in technical discipline; an additional 5 years of system administrator experience might be substituted for a degree.
  • 15+ years' experience as a Systems Administrator or in related IT roles.
  • Experience with Red Hat Enterprise Linux (RHEL).
  • Familiarity with Windows.

Preferred Qualifications

  • Experience with cloud infrastructure administration, preferably AWS.

Clearance Requirements

  • Active TS/SCI with Polygraph.

Physical Requirements

  • Needs to be able to provide hardware transferring support.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
  • Must be able to exchange accurate information in these situations.

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