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System Administrator 5 (TS/SCI Required)

Jobs via Dice
Herndon, VA Full Time
POSTED ON 4/12/2026
AVAILABLE BEFORE 5/12/2026
Location: Herndon, VA

Description:

The Judge Group is seeking an experienced Systems Administrator to support our client's Mission Operations portfolio in Herndon, VA, delivering complex, mission-critical computing and infrastructure solutions for government and commercial customers operating in some of the most challenging environments on Earth.

In this role, you'll collaborate with high-performing engineering and operations teams to design, deploy, maintain, and secure computing systems that ensure the success of vital missions.

This job will have the following responsibilities:

  • Collaborate in the design, deployment, and management of advanced computing delivery systems, standards, and change management processes.
  • Monitor system performance, troubleshoot issues, and perform regular maintenance including updates, patches, and security fixes.
  • Support network engineers with configuration and management of network services such as DNS, DHCP, and Active Directory.
  • Implement and manage backup strategies to ensure data protection and robust disaster recovery capabilities.
  • Apply and maintain security measures-firewalls, endpoint protection, and access controls-to protect systems from unauthorized access and threats.
  • Analyze system performance to identify and resolve bottlenecks, improving efficiency and responsiveness.
  • Maintain comprehensive documentation of configurations, procedures, and troubleshooting steps; generate reports on system health, security, and compliance.
  • Participate in planning and executing new systems, upgrades, and migrations, ensuring technical integrity and adherence to best practices.
  • Stay current with evolving technologies, industry trends, and security practices through continuing education, training, and certifications.
  • Support automation, configuration management, and infrastructure administration efforts in line with established change control processes.
  • Mentor, lead, and train other team members in best practices for system administration and information security.

Qualifications & Requirements:

  • Active TS/SCI U.S. Security Clearance with Full Scope Polygraph (FSP) required.
  • 5 years of related experience for mid-level roles, or 10 years for senior-level consideration.
  • Demonstrated system administration experience in Linux/Unix and/or Windows environments.

Preferred Qualifications:

  • Expertise in on-premises virtualization (e.g., AHV, VMware ESXi, Hyper-V) or cloud technologies (AWS, Azure).
  • Experience with Virtual Desktop Infrastructure (VDI), infrastructure monitoring, and securing enterprise systems.
  • Strong working knowledge of information security principles, auditing, and incident response.
  • Experience using Confluence, Jira, or similar platforms for documentation and task management.
  • Relevant industry certifications (e.g., CompTIA Security , AWS Certified SysOps, CISSP, Microsoft, or other INFOSEC credentials).

By providing your phone number, you consent to: (1) receive automated text messages and calls from the Judge Group, Inc. and its affiliates (collectively "Judge") to such phone number regarding job opportunities, your job application, and for other related purposes. Message & data rates apply and message frequency may vary. Consistent with Judge's Privacy Policy, information obtained from your consent will not be shared with third parties for marketing/promotional purposes. Reply STOP to opt out of receiving telephone calls and text messages from Judge and HELP for help.

Contact:

This job and many more are available through The Judge Group. Please apply with us today!

Salary.com Estimation for System Administrator 5 (TS/SCI Required) in Herndon, VA
$116,587 to $144,991
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