Systems Administrator

VTG Defense; Chantilly (VA); On-site; USD 80,000 - 100,000; Full time

Job summary

A leading defense contracting company in Chantilly, Virginia, is seeking a skilled Systems Administrator to manage and support enterprise IT infrastructure. You will ensure the reliability and security of servers and networks while performing system installations, monitoring, and automation tasks. The ideal candidate has over 5 years of experience, strong knowledge of Windows/Linux environments, and must hold an active TS/SCI with Polygraph clearance. A bachelor's degree in IT or a related field is required.

Qualifications

• Active TS/SCI with Polygraph required.
• 5+ years of experience in systems administration or IT operations.
• Strong experience with Windows and/or Linux server environments.

Responsibilities

• Install, configure, and maintain servers, operating systems, and enterprise applications.
• Monitor system performance, availability, and security across environments.
• Automate routine tasks using scripting.

Skills

Systems Administration

Scripting (PowerShell, Bash, Python)

Active Directory

Networking Fundamentals

Education

Bachelor's degree in Information Technology or Computer Science

Tools

VMware

Hyper‑V

Job description

Overview

We are seeking a skilled Systems Administrator to manage, maintain, and support enterprise IT infrastructure. This role is responsible for ensuring the reliability, security, and performance of servers, networks, and systems while supporting day-to-day operations and long-term IT initiatives.

What will you do?

• Install, configure, and maintain servers, operating systems, and enterprise applications
• Monitor system performance, availability, and security across environments
• Manage user accounts, permissions, and access controls (Active Directory, IAM)
• Perform system patching, updates, and vulnerability remediation
• Troubleshoot hardware, software, and network issues across infrastructure
• Support backup, disaster recovery, and business continuity processes
• Maintain system documentation, configurations, and standard operating procedures
• Collaborate with network engineers, security teams, and developers to support infrastructure needs
• Automate routine tasks using scripting (PowerShell, Bash, Python)
• Ensure systems comply with security policies and regulatory requirements

Do you have what it takes?

• Active TS/SCI with Polygraph required.
• Bachelor's degree in Information Technology, Computer Science, or related field (or equivalent experience)
• 5+ years of experience in systems administration or IT operations
• Strong experience with Windows and/or Linux server environments
• Experience with Active Directory, DNS, DHCP, and Group Policy
• Familiarity with virtualization technologies (VMware, Hyper‑V)
• Knowledge of networking fundamentals (TCP/IP, firewalls, VPNs)
• Experience with system monitoring tools and log management
• Proficiency in scripting or automation (PowerShell, Bash, Python)