Senior Linux Systems Administrator (TS/SCI) – Secure Infra

CACI International Inc.; Fort Meade (MD); On-site; USD 121,000 - 266,000; Full time

Job summary

CA C I International Inc. is seeking a Linux Systems Administrator to support mission-critical DoD/Intelligence Community infrastructure. The role involves high-security environments, advanced systems administration, and automation to improve operational readiness.

The candidate will manage virtualization, network security, and enterprise systems, requiring TS/SCI with poly, DoD 8570/8140 IAT II cert, and a strong track record in secure Linux environments.

Qualifications

• Active TS/SCI clearance with a current Polygraph.
• Bachelor's degree in Information Technology, Computer Science, Engineering, or related field (additional relevant experience may be substituted for education)
• 10+ years of progressive Systems Administration experience supporting enterprise IT infrastructure in secure Linux environments
• DoD 8570/8140 IAT Level II certification (Security+, CySA+, CCNA Security, or equivalent)

Responsibilities

• Provide advanced systems administration for enterprise infrastructure in a DoD/IC environment.
• Configure, implement, and maintain secure networking and firewall policies.
• Develop automation solutions using Python and Ansible for provisioning & config management.
• Administer VMware virtualization and lifecycle management.
• Maintain Windows and Linux server hardening, patching, and regulatory compliance.

Skills

Linux admin

TS/SCI clearance

Python automation

Automation tooling

DoD network security

Education

Bachelor's degree in IT/CS/Engineering

Tools

VMware

Ansible

Palo Alto/ASA

Nessus

Splunk

SolarWinds

Active Directory

Job description

CA C I International Inc. is seeking a Linux Systems Administrator to support mission-critical DoD/Intelligence Community infrastructure. The role involves high-security environments, advanced systems administration, and automation to improve operational readiness.

The candidate will manage virtualization, network security, and enterprise systems, requiring TS/SCI with poly, DoD 8570/8140 IAT II cert, and a strong track record in secure Linux environments.