Linux Systems Administrator

MANTECH; Chantilly (VA); On-site; USD 80,000 - 110,000; Full time

Job summary

MANTECH is seeking a motivated Senior Linux Systems Administrator for their Chantilly, VA office. In this role, you will maintain and enhance the Linux environment, working closely with a skilled team. Responsibilities include planning and maintaining OSs, building servers, and collaborating across departments.

The ideal candidate has a high school diploma with at least 2 years of experience and a strong grasp of system configuration and security protocols. An active TS/SCI clearance is required.

Qualifications

• 2+ years of experience configuring and maintaining Linux servers.
• Experience in complex, intertwined systems with security patch application.
• Strong documentation skills for IT processes.

Responsibilities

• Planning, testing, and maintaining Linux operating systems.
• Building and hardening Linux servers.
• Troubleshooting operating system issues and collaborating with teams.

Skills

Linux server configuration

Shell scripting

Security patch application

Communication skills

Education

High School Diploma/GED

Tools

Centrify

LDAP

Ansible

Job description

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

• 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 lifecycles, 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.