Classified Systems Administrator (TS/SCI) – Virtualization

CACI International Inc; Sterling (VA); On-site; USD 90,300 - 189,600; Full time

Job summary

CACI International Inc is seeking a highly skilled Systems Administrator to support mission-critical classified information systems in a secure environment. The role combines Windows Server administration, virtualization, and IA responsibilities to ensure reliability and security across networks.

Responsibilities include managing Exchange and SQL Server, implementing vulnerability mitigations with Nessus, and overseeing privileged access with RSA and CyberArk in a DoD/NISPOM aligned setting.

Qualifications

• Bachelor's degree or equivalent with 7+ years in systems engineering/administration.
• Active TS/SCI w/ Polygraph clearance required.
• DoD‑level security certifications (e.g., Security+) or equivalent.
• Extensive experience with Windows Server, patching, and performance tuning.
• Hands-on virtualization admin across VMware/Hyper-V/Nutanix.

Responsibilities

• Install, configure, and maintain Windows Server in classified environments.
• Manage virtualization with VMware, Hyper-V, and Nutanix.
• Administer Exchange and SQL Server; Skype for Business, Jira, Confluence.
• Troubleshoot and resolve issues across classified networks.
• Monitor performance, apply patches, and use Nessus for vulnerability mitigations.
• Manage storage platforms like Pure Storage, Dell PowerVault, and Synology.
• Administer privileged access with RSA and CyberArk.
• Handle AD requests and DoD/NISPOM compliant account management.

Skills

Windows Server

VMware

Hyper‑V

Nutanix

Active Directory

Nessus

Education

Bachelor's degree or equivalent experience

Tools

Microsoft Exchange

Microsoft SQL Server

Jira

Confluence

Nessus

RSA

Job description

CACI International Inc is seeking a highly skilled Systems Administrator to support mission-critical classified information systems in a secure environment. The role combines Windows Server administration, virtualization, and IA responsibilities to ensure reliability and security across networks.

Responsibilities include managing Exchange and SQL Server, implementing vulnerability mitigations with Nessus, and overseeing privileged access with RSA and CyberArk in a DoD/NISPOM aligned setting.