Systems/Network Engineer - TS/SCI with Polygraph

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

Cisco Networking Equipment

Network Engineering

Security Architecture Design

Systems Engineering

REQ#: RQ217526
Public Trust: None
Requisition Type: Regular
Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

Deliver effective solutions to complex problems as a Systems/Network Engineer at GDIT. Here, you’ll tailor cutting-edge solutions to the unique requirements of our clients. With a career in the cyber track, you’ll make the customer's mission your priority and we’ll make your career growth ours.

Our ideal Senior Systems/Network Engineer has 5+ years' experience architecting and managing network infrastructure, with a focus on network segmentation and automation workflows. We are looking for a forward-thinking engineer to install, configure, and automate network devices and management tools. You will perform advanced administration of Cisco hardware/software while executing modern security practices to isolate workloads and reduce attack surfaces. 

At GDIT, people are our differentiator. As a Systems/Network Engineer you will help ensure today is safe and tomorrow is smarter. Our work depends on the ideal candidate joining our team to support the customer's mission while defending its networks and information against unauthorized access.

HOW A SYSTEMS/NETWORK ENGINEER WILL MAKE AN IMPACT

  • Provide Network Engineering and Operations & Maintenance (O&M) on a proprietary network and related infrastructure devices.
  • Provides and applies advanced engineering to highly complex infrastructures including installing, configuring, testing and maintaining network devices, operating systems, and system management tools.
  • Performs maintenance and provides advanced solutions for continual and highly complex security, backup and redundancy problems.
  • Prepares and maintains documentation for processes and procedures.
  • Maintains current knowledge of rapidly changing technology, on the lookout for new technologies, and works with management to evolve current processes.
  • May coach and review the work of less-experienced professionals.
  • Invents innovative ways to drive operational efficiency.
  • Drives scalability and operability of supported systems/infrastructure.
  • Provides system/equipment/specialized training and technical guidance. 


WHAT YOU’LL NEED TO SUCCEED:

  • Education: Bachelor of Science in Computer Science, Engineering, or other IT-related discipline, or the equivalent combination of education, technical certifications or training, or work experience.
  • Required Experience: 5+ years
  • Technical skills:
  • Experience with Cisco networking devices (firewalls, routers, switches).
  • Experience with cloud networking concepts and implementation.
  • Familiarity or ability to learn network automation tools and scripting (e.g., Python, Ansible, or Terraform) to streamline configuration and deployment.
  • Experience with network storage concepts and technologies.
  • Well versed with common Virtualization technologies such as VMware.
  • Forward-thinking mindset with the ability to transition manual processes into automated, repeatable workflows.
  • Analyzes complex information and independently takes appropriate actions to resolve problems before they impact production.
  • Continually guides network/system development through the assessment of system engineering management plans and modern integration/test plans.
  • Develops technical documentation, architectures, and network design documentation.
  • Validates the technical integrity of work performed, ensuring configurations meet baseline security and automation standards.
  • Excellent communication skills; shows tact, effective listening skills and follow through.
  • Designs and delivers proactive, future-proof solutions.
  • Monitors usage statistics and logs to proactively recommend future projects to management. 
  • Thorough understanding of network concepts, LAN design, network segmentation, and IP addressing
  • Firmware and network operating system patching and upgrades
  • Domain Name Systems (DNS)
  • Network Attached Storage (NAS)
  • VMWare installation and configuration (vSphere / ESXi)
  • Virtual LANs (VLANs)
  • Security clearance: TS/SCI with Polygraph
  • Location: Herndon, VA (customer site)
  • US Citizenship: Required


GDIT IS YOUR PLACE:

  • 401K with company match
  • Comprehensive health and wellness packages
  • Internal mobility team dedicated to helping you own your career
  • Professional growth opportunities including paid education and certifications
  • Cutting-edge technology you can learn from
  • Rest and recharge with paid vacation and holidays

#OpportunityOwned 
#GDITCareers 
#WeAreGDIT  
#JET
#GDITEnhanced2026
#VA_2026Alumni 
 

Work Requirements
Years of Experience

5 + years of related experience

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

Certification

CCNA - Cisco - Cisco

Travel Required

Less than 10%

Citizenship

U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $136,000 - $184,000. 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.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across over 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, cloud, cyber and application development. Together with our customers, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

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