Principal Systems Engineer, Classified Linux & Security

General Dynamics Information Technology, Inc.; McLean (VA); On-site; USD 130,000 - 176,000; Full time

Job summary

General Dynamics Information Technology, Inc. seeks a Systems Engineer Principal to advance how our customers operate within a classified commercial cloud environment.

You will lead engineering and operations of Red Hat and other Linux systems in an air‑gapped setting, ensuring secure access to mission-critical resources. You will configure, patch, and monitor Linux platforms and network devices, including Palo Alto firewalls and Cisco switches, and drive STIG/NIST/DoD compliance while

Qualifications

• Bachelor of Arts/Bachelor of Science required.
• 8+ years of related experience.
• US Citizenship required; Top Secret clearance preferred.

Responsibilities

• Lead day‑to‑day engineering and operations of Red Hat and other Linux systems in a classified, air‑gapped environment.
• Configure, patch, and monitor systems and network devices using Palo Alto firewalls, Cisco switches, Panorama, and ClearPass.
• Support vulnerability management and continuous monitoring, including scans and remediation, POA&M mitigation, and security updates.

Skills

Linux Development

Linux Kernel

Networking

Systems Architecture

Education

Bachelor of Arts/Bachelor of Science

Tools

Palo Alto

Cisco switches

Panorama

ClearPass

Job description

General Dynamics Information Technology, Inc. seeks a Systems Engineer Principal to advance how our customers operate within a classified commercial cloud environment.

You will lead engineering and operations of Red Hat and other Linux systems in an air‑gapped setting, ensuring secure access to mission-critical resources. You will configure, patch, and monitor Linux platforms and network devices, including Palo Alto firewalls and Cisco switches, and drive STIG/NIST/DoD compliance while