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Principal Systems Engineer

Job in McLean, Fairfax County, Virginia, USA
Listing for: General Dynamics Information Technology
Full Time position
Listed on 2026-09-12
Job specializations:
  • IT/Tech
    Systems Engineer, Cybersecurity
Salary/Wage Range or Industry Benchmark: 120000 - 180000 USD Yearly USD 120000.00 180000.00 YEAR
Job Description & How to Apply Below

SYSTEMS ENGINEER PRINCIPAL

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.

MEANINGFUL WORK AND PERSONAL IMPACT

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.

  • Lead day-to-day engineering and operations ofRed Hatand 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 asPalo Alto firewalls, Cisco switches, Panorama, Clear Pass, 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 managementandcontinuous monitoring, including reviewing scans, implementing patching and remediation, POA&M mitigation, and other corrective actions.
  • Drive hardening and compliance efforts, includingSTIGreview and implementation, to meetNISTand Do Drequirements .
  • Develop and maintain engineering documentation for designs, configurations, and operational procedures.
WHAT YOU’LL NEED TO SUCCEED

Bring your technology expertise and drive for innovation to GDIT. The Systems Engineer Principal must have:

Education:

Bachelor of Arts/Bachelor of Science

Experience:

8+ years of related experience

Technical skills:

  • 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 Clear Pass
  • Security clearance level:
    Current and active Top Secret
  • Onsite - Mclean, VA
  • Must be DoD 8140 / 8570.01-M compliant (e.g., Security+ or equivalent)
GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

Growth: AI-powered career tool that identifies career steps and learning opportunities

Support:
An internal mobility team focused on helping you achieve your career goals

Rewards:
Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

Community:
Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY

Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

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