Senior Network Engineer

General Dynamics Information Technology

Senior Network Engineer supporting enterprise infrastructure across cloud and network services. Responsible for implementing, operating, and improving critical network infrastructure within hybrid environments.

Posted 7/9/2026full-timeHerndon • Virginia • 🇺🇸 United StatesSenior💰 $93,662 - $115,000 per yearWebsite

Tech Stack

Tools & technologies

CloudDNSSwitchingTCP/IP

About the role

Key responsibilities & impact

Operate and improve enterprise network infrastructure
Install, configure, and support enterprise network equipment including routers, switches, and core network services
Maintain highly available network infrastructure supporting enterprise and cloud-connected environments
Continuously improve network reliability, performance, and operational efficiency across large-scale deployments
Support routing, switching, and core network protocols
Configure and troubleshoot routing and switching infrastructure across large enterprise environments
Support dynamic routing protocols such as BGP and OSPF
Maintain strong operational knowledge of network layers (L1/L2/L3) and how they impact service delivery
Diagnose complex network issues across routing, switching, and transport layers
Maintain network security and connectivity
Configure and support enterprise firewall platforms, including access control policies, VPNs, and secure tunnels
Maintain secure network connectivity across internal networks, remote sites, and cloud environments
Ensure network configurations align with organizational security standards and operational best practices
Manage foundational network services
Manage enterprise DNS infrastructure, including record creation, monitoring, troubleshooting, and lifecycle management
Support DNS security and protection mechanisms
Maintain integration between DNS, directory services, and DHCP systems
Troubleshoot complex network problems
Provide advanced troubleshooting and resolution for complex network performance or connectivity issues
Utilize monitoring and diagnostic tools to identify and resolve infrastructure problems
Participate in incident response, root cause analysis, and operational improvement efforts
Support enterprise device and wireless authentication
Troubleshoot wireless authentication and network access for managed devices
Partner with endpoint management teams to support device identity and authentication workflows
Maintain critical network infrastructure services
Manage DNS infrastructure, including record creation, monitoring, and troubleshooting
Implement DNS security and protection capabilities
Support DNS integration with directory services and DHCP systems
Collaborate across engineering teams
Partner with cloud, security, and infrastructure teams to support enterprise networking requirements
Contribute to network design documentation, operational runbooks, and engineering best practices
Mentor junior engineers and support knowledge sharing within the engineering organization
Support operational lifecycle management
Maintain network infrastructure through firmware updates and lifecycle management
Ensure network equipment remains aligned with current security and operational standards
Contribute to change management processes and operational readiness activities

Requirements

What you’ll need

10+ years of experience supporting enterprise networking environments
Strong hands-on experience with enterprise routing and switching
Deep understanding of networking protocols such as TCP/IP, DNS, HTTP/HTTPS, and VPN technologies
Experience operating and troubleshooting dynamic routing protocols such as BGP and OSPF
Experience configuring and maintaining enterprise firewall platforms, VPN connectivity, and network security controls
Strong troubleshooting skills across routing, switching, and network infrastructure layers
Experience managing DNS infrastructure, including monitoring, security, and integration with enterprise directory services
Experience supporting enterprise wireless and device authentication environment
Experience working within large enterprise or service provider environments
Familiarity with network monitoring and diagnostic tools
Ability to collaborate effectively across infrastructure, cloud, and security engineering teams
High school diploma required

Benefits

Comp & perks

Comprehensive benefits and wellness packages
401K with company match
Competitive pay and paid time off
Health Savings Accounts options
Flexible work weeks
Vacation, sick and personal time, holidays, paid parental leave, military leave, bereavement leave 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

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Hard Skills & Tools

RoutingSwitchingDynamic Routing ProtocolsNetwork SecurityDNS ManagementVPN TechnologiesTCP/IPHTTP/HTTPSWireless AuthenticationNetwork Troubleshooting

Soft Skills

CollaborationMentoringKnowledge Sharing