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Linux Systems Administrator

Job in Chantilly, Fairfax County, Virginia, 22021, USA
Listing for: ManTech International
Full Time position
Listed on 2026-06-17
Job specializations:
  • IT/Tech
    Systems Administrator, Unix/Linux, Cybersecurity
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference.

Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks a motivated, mission-focused Senior Linux Systems Administrator to join our team in Chantilly, VA.

As a Linux Systems Administrator, you will help maintain and enhance the Sponsor’s Linux environment alongside a talented team. You will be responsible for the operating system software and its seamless integration with hardware and applications across the organization.

Responsibilities include but are not limited to:
  • Planning, testing, installing, integrating, and maintaining new and upgraded versions of the relevant operating systems
  • Building and hardening Linux servers, and establishing configuration baselines while applying all appropriate security and firmware patches in a timely manner
  • Developing test plans/procedures, managing operating system life cycles, and designing interfaces to external systems
  • Researching, troubleshooting, and resolving operating system problems efficiently by collaborating with application development and network teams
  • Maintaining and updating complex documentation on the operating system configuration and all other areas of responsibility
  • Demonstrating strong communication and collaboration skills to work effectively and proactively across a large organization of dispersed teams
Minimum Qualifications:
  • High School Diploma/GED with 2+ years of progressively responsible experience configuring and maintaining Linux servers in a large, complex server environment
  • Experience working in an organization with complex, intertwined systems, data flows, and applying security patches in a Linux environment
  • Experience creating, maintaining, and communicating complex information technology documentation
  • Experience with domain account management, particularly via Centrify, LDAP, and Active Directory
  • Experience with shell scripting to automate administrative tasks
Preferred Qualifications:
  • Experience scripting with Ansible or similar technologies
  • Experience with the Sponsor’s primary automation and configuration management tools
  • Self-starter with excellent people skills - able to work across teams and drive change throughout an organization
Clearance Requirements:
  • An active TS/SCI with Polygraph is required.
Physical Requirements:
  • Must be able to remain in a stationary position 50% of the time to operate a computer and other office productivity machinery.
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, and maintain computers in the lab, including under desks and in the server closet.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations and exchanging accurate information.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at  and provide your name and contact information.

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