Network Engineer Expert – TS/SCI with Polygraph

General Dynamics Information Technology

Network Engineer Expert managing on-premises and cloud-based network systems at GDIT. Designing, implementing, and optimizing network infrastructures with a focus on innovation and efficiency.

Posted 6/2/2026full-timeAurora • Colorado, Virginia • 🇺🇸 United StatesSeniorLead💰 $148,750 - $201,250 per yearWebsite

Tech Stack

Tools & technologies

CloudDNSServiceNow

About the role

Key responsibilities & impact

Administer, operate, manage and maintain network components for on-premises and cloud-based virtualized systems
Design, develop, implement, and maintain (LAN, WAN, Wireless) network infrastructure
Determine network bandwidth needs and recommend measures to meet those requirements
Design, recommend and implement new solutions to improve the resilience of network operations
Conduct network modeling and analysis to construct a reliable, high-performance integrated network
Monitor network performance and troubleshoot problems and outages
Schedule updates and upgrades
Collaborate with network architects to optimize system performance
Engage in data network fault investigations
Secure network systems with policies that define and monitor access
Configure DNS servers and appliances

Requirements

What you’ll need

10+ years of related experience
BA/BS Required
CompTIA Security+ certification or similar for IAT Level II DoD 8570 certification
Understanding of networking protocols (e.g., IPSEC, MACSEC, HSRP, BGP, OSPF, 802.11, QoS)
Familiar with various technologies and protocols including Layer 2 (Ethernet, Frame Relay, PPPoE, STP, 802.1q, 802.1x, MPLS, L2VPNs), Layer 3 (IP, IPv6, LDP, L3VPNs, RSVP, DHCP, IPSEC, PIM, IGMP), and Layer 4 (TCP, UDP)
Experience with managing work tasks via tools such as JIRA and ServiceNow

Benefits

Comp & perks

Comprehensive benefits and wellness packages
401K with company match
Competitive pay and paid time off
Full flex work weeks where possible
A 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

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

network administrationnetwork managementLAN designWAN designWireless network designnetwork modelingnetwork troubleshootingDNS configurationnetwork performance monitoringnetwork resilience improvement

Soft Skills

collaborationproblem-solvingcommunicationanalytical thinkingorganizational skills

Certifications

CompTIA Security+IAT Level II DoD 8570 certification