Administrative Skills, Ansible, Automation, Communication Skills, Computer Firmware, Computer Maintenance, Configuration Management, Data Analysis, Documentation, Equipment Maintenance/Repair, Government Intelligence, High School Diploma, Identify Issues, Information Technology & Information Systems, Intelligence Agencies, Internet Security, Interpersonal Skills, LDAP (Lightweight Directory Access Protocol), Linux Administration, Linux Operating System, Microsoft Active Directory, Office Equipment, Operating Systems, Operations Processes, People Management, Presentation/Verbal Skills, Problem Solving Skills, Process Improvement, Sales Management, Scripting (Scripting Languages), Security Patches, Software Development, System Lifecycle, Systems Administration/Management, Team Player, Test Plan/Schedule, Testing, Time Management, Unix Shell Programming
General information
Requisition #
R68505
Locations
USA-VA-Chantilly
Posting Date
06/10/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time
Description & Requirements
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 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.
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 careers@mantech.com and provide your name and contact information.
M
ManTech International Corp
Our Mission
Our mission is empowering our nation through a diverse and skilled workforce securely delivering innovative technology, consulting services and digital solutions for our customers’ mission success, every day.
Our Vision
Our vision is Securing the Future as the most trusted partner for U.S. Defense, Intelligence and Federal Civilian customers through the power of One ManTech. When these agencies think of an essential partner for their national and homeland security needs, they think ManTech.
Our Values
Our values are grounded in a bedrock of truth, integrity and caring for each other and the mission. We hold steadfast to:
• TRUST – We earn and protect the trust of our customers, employees and investors through an enduring foundation of respect, fairness, credibility and honoring our commitments, always.
• INCLUSION – We are an inclusive, diverse and talented workforce with a passion for mission success, intellectual capital, creativity and integrity. Our high ethical standards and investment in our people build confidence with our customers.
• QUALITY– We deliver exceptional quality to customers through differentiated technology solutions and an uncompromising focus on excellence, value and innovation.
5,000 to 9,999 employees
https://www.mantech.com/about