Senior Linux Systems Engineer, TS/SCI Clearance

CACI International; United States; On-site; USD 121,000 - 266,000; Full time

Benefits offered by this job

Flexible time off

Learning resources

Healthcare benefits

Job summary

CAC I International seeks a Linux Systems Engineer to support mission‑critical DoD/IC infrastructure. You will handle advanced Linux administration, network security, virtualization, and automation while maintaining high availability and compliance.

The role requires independence, troubleshooting complex systems, and working in highly classified environments under strict security controls. A TS/SCI clearance is essential.

Qualifications

• Bachelor’s degree or related field with 10+ years of enterprise Linux systems administration experience.

Responsibilities

• Provide advanced systems administration for DoD/IC enterprise Linux environments.
• Support virtualization, automation, and cybersecurity compliance to ensure high availability and security.
• Maintain enterprise systems and network infrastructure in secure environments.

Skills

Linux

Cisco ASA

Cisco Firepower

Palo Alto

IPSEC VPNs

VMware

Python

Bash

Ansible

Ansible Playbooks

Windows admin

IAVA patching

STIG

Nessus

rack and stack

Security compliance

Education

Bachelor’s degree in Information Technology, Computer Science, Engineering, or related field

Tools

Nessus

VMware

Ansible

Job description

CAC I International seeks a Linux Systems Engineer to support mission‑critical DoD/IC infrastructure. You will handle advanced Linux administration, network security, virtualization, and automation while maintaining high availability and compliance.

The role requires independence, troubleshooting complex systems, and working in highly classified environments under strict security controls. A TS/SCI clearance is essential.