Principal Systems Engineer

Clearance Level
Top Secret
Category
IT Infrastructure and Operations
Location
McLean, Virginia
(Onsite Workplace)
Key Skills For Success

Linux Development

Linux Kernel

Networking

Systems Architecture

REQ#: RQ227592
Public Trust: None
Requisition Type: Regular
Your Impact

Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.

Job Description

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 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.

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 ClearPass
  • 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.

Work Requirements

Years of Experience

8 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

CompTIA Security+ CE | CompTIA - CompTIA

Travel Required

Less than 10%

Citizenship

U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $130,050 - $175,950. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
View information about benefits and our total rewards program.

Our Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans