Job Description

MANTECH seeks a motivated, career and customer-oriented LINUX SERVER ADMINISTRATOR to join our team in QUANTICO, VA .

This position supports mission-critical Department of War (DoW) IT infrastructure. The contractor will assist with the installation, configuration, maintenance, and security of Linux-based server environments on classified and unclassified networks to ensure the availability and resilience of vital national security assets.

Responsibilities include but are not limited to:

• Assist with the installation, configuration, and day-to-day maintenance of Linux operating systems (including Red Hat Enterprise Linux and Ubuntu) across physical and virtual (VMware) environments under senior engineering guidance.
• Support compliance efforts by applying DoD Security Technical Implementation Guides (STIGs), executing routine vulnerability patching (IAVAs/IAVBs), and maintaining alignment with Risk Management Framework (RMF) standards.
• Monitor server health and system performance; provide Tier I/II technical support to diagnose and resolve standard hardware, software, and network configuration issues.
• Utilize and modify basic automation scripts (using Bash, Python, or Ansible) to execute routine administrative tasks and system checks.
• Update and maintain standard operating procedures (SOPs), system logs, and administrative documentation to support compliance and team operational continuity.

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Information Systems, or a related technical field with 2–3 years of IT/Linux experience, or 4–5 years of equivalent hands-on IT/Linux experience without a degree.
• 1–2 years of hands-on experience in Linux systems administration (entry-to-mid level), preferably in a federal or DoD environment.
• Active IAT Level II baseline certification (e.g., CompTIA Security+ CE, CCNA Security, or equivalent).
• Basic understanding of fundamental Linux tools and administrative services (NFS, DNS, SSH, user/group management).
• Working knowledge or training in Linux systems (holding or working toward a CompTIA Linux+ or RHCSA certification is a plus).

Preferred Qualifications:

• Exposure to DoD security tools such as ACAS, HBSS/ESS, or Splunk.
• Exposure to basic scripting concepts (Bash, Python) or configuration tools (Ansible).
• Familiarity with virtualization basics (VMware vSphere).

Clearance Requirements:

• Must have an active Top Secret / Sensitive Compartmented Information (TS/SCI) security clearance.

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers via email, phone, or virtual communication tools.

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