TS/SCI Security Systems Administrator

VTG; Chantilly (VA); On-site; USD 100,000 - 150,000; Full time

Job summary

VTG in Chantilly, VA is seeking a Systems Administrator to manage and secure extensive IT infrastructure across Windows and Linux environments. You will install, patch, monitor, and optimize servers, with emphasis on reliability, security, and uptime.

The role requires 5+ years in systems administration, strong AD/DNS/DHCP knowledge, virtualization (VMware/Hyper-V), and scripting (PowerShell, Bash, Python). Active TS/SCI with Polygraph is required for this position.

Qualifications

• 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).

Responsibilities

• 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 SOPs.
• 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.

Skills

Scripting: PowerShell

Scripting: Bash

Scripting: Python

Windows/Linux server experience

Education

Bachelor's degree or equivalent experience

Tools

Active Directory

DNS

DHCP

Group Policy

VMware

Hyper-V

Job description

VTG in Chantilly, VA is seeking a Systems Administrator to manage and secure extensive IT infrastructure across Windows and Linux environments. You will install, patch, monitor, and optimize servers, with emphasis on reliability, security, and uptime.

The role requires 5+ years in systems administration, strong AD/DNS/DHCP knowledge, virtualization (VMware/Hyper-V), and scripting (PowerShell, Bash, Python). Active TS/SCI with Polygraph is required for this position.