Principal Systems Engineer

General Dynamics Information Technology•McLean, VA
•$130,050 - $175,950•Onsite

About The Position

Advance how our customers operate while you advance your career. Join GDIT as a Systems Engineer Principal and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you. As a Systems Engineer Principal, the work you’ll do at GDIT will be impactful to the mission of our customer’s classified commercial cloud environment. You will play a crucial role in operating, securing, and optimizing a secure workstation enclave in a unique commercial cloud setting, ensuring secure and reliable access to mission-critical resources.

Requirements

  • Bachelor of Arts/Bachelor of Science
  • 8+ years of related experience
  • Hands-on experience with Red Hat operating system
  • Understanding of various Linux operating systems (e.g., Red Hat, Debian)
  • Hands-on experience with operations and maintenance (O&M) of Palo Alto firewalls, Cisco switches, and applicable software including Panorama and ClearPass
  • Security clearance level: Current and active Top Secret
  • Must be DoD 8140 / 8570.01-M compliant (e.g., Security+ or equivalent)

Nice To Haves

  • Linux Development
  • Linux Kernel
  • Networking
  • Systems Architecture

Responsibilities

  • Lead day-to-day engineering and operations of Red Hat and other Linux systems in a classified, air‑gapped environment, including configuration, hardening, patching, and maintenance.
  • Configure, patch, and monitor systems and network devices using tools such as Palo Alto firewalls, Cisco switches, Panorama, ClearPass, and related platforms, ensuring performance, integrity, connectivity, and backup/recovery capabilities.
  • Collaborate with enclave, network, and security engineers, and vendors to troubleshoot issues, enhance the enclave’s network and security posture, and manage security updates, licenses, and support tickets.
  • Support vulnerability management and continuous monitoring, including reviewing scans, implementing patching and remediation, POA&M mitigation, and other corrective actions.
  • Drive hardening and compliance efforts, including STIG review and implementation, to meet NIST and DoD requirements.
  • Develop and maintain engineering documentation for designs, configurations, and operational procedures.

Benefits

  • AI-powered career tool that identifies career steps and learning opportunities
  • An internal mobility team focused on helping you achieve your career goals
  • Comprehensive benefits and wellness packages
  • 401K with company match
  • Competitive pay and paid time off
  • Award-winning culture of innovation and a military-friendly workplace
  • Variety of medical plan options, some with Health Savings Accounts
  • Dental plan options
  • Vision plan
  • 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match
  • Full flex work weeks where possible
  • Variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave
  • Short and long-term disability benefits
  • Life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance
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