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Linux System Administrator with Security Clearance

MANTECHLaurel, MD🇺🇸United StatesPosted Oct 5, 2026

Why This Role Stands Out

This hybrid role offers significant career growth in a critical national defense sector, allowing you to hone your Linux and security skills while contributing to vital enterprise infrastructure. You'll thrive here if you're a motivated mid-senior Linux administrator with security clearance who enjoys solving complex technical challenges and collaborating within a dedicated team. Apply now to join MANTECH and make a tangible impact!

Quick Overview

Seniority
Mid Senior
Employment type
Employee
Work mode
Hybrid
Location
Laurel, MD, United States
Posted
Yesterday
VMware

Job Description

MANTECH is seeking a motivated, career-driven, and customer-focused Linux System Administrator to join our team in Laurel, MD. You will play a critical role in supporting the enterprise infrastructure capabilities for a global, mission-focused workforce. This position supports the high-visibility Enterprise Infrastructure Services (EIS) organization, responsible for the delivery and security of MPO's Enterprise Information Technology (EIT), the foundation for enterprise-wide services. As a System Engineer, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. Responsibilities include but are not limited to:

  • Administer, configure, and maintain Linux operating systems to ensure high performance and reliability. Responsible for OS installation, system health and security integrity, network component configuration, and executing continuous system enhancements.
  • Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems.
  • Manage IT system infrastructure and any processes related to these 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 dispatch system and hardware problems and will remain involved in the resolution process.
  • Optimize system operations and resource utilization and perform system capacity analysis and planning.
  • Analyze and resolve complex problems associated with server hardware, applications and software integration.

Minimum Qualifications

  • Bachelor's degree from an accredited college or university in technical discipline is required. Five (5) years of additional System Administration experience may be substituted for a bachelor's degree
  • 20+ years' experience as a System Administration in programs and contracts of similar scope, type, and complexity is required.
  • Demonstrated experience leading Systems Administration/Engineering efforts is required
  • Must be proficient troubleshooting in a Linux environment
  • Experience with VMware
  • IAT I certification (DoD 8140 required within 60 days of starting employment. Acceptable certifications include A+ CE/CCNA-Security/CND/Network+ CE /CySA+/GICSP/GSEC/Security+ CE/CND/SSCP) Preferred Qualifications:
  • Based on program and technical requirements, evaluates and recommends appropriate hardware, software and services solutions.
  • Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching.
  • Red Hat Certified System Administration Certification.
  • Experience with NetAPP Clearance Requirements:
  • Must possess and maintain a current/active TS/SCI clearance with Polygraph
Physical Requirements:
  • Must be able to remain in a stationary position 50% of the time
  • Occasionally moves about inside the office to access file cabinets, office machinery, etc.
  • Frequently communicate with co-workers, management, and customers, including delivering presentations. Must be able to exchange accurate information in these situations

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