Senior Network Security Engineer: Firewalls & LAN/WAN

General Dynamics Information Technology, Inc.; Herndon (VA); On-site; USD 102,000 - 138,000; Full time

Benefits offered by this job

401K with company match

Comprehensive health and wellness

Internal mobility and career growth

Paid education and certifications

Job summary

General Dynamics Information Technology, Inc. seeks a Network Engineer to oversee network solutions, capacity planning, and system installs. The role requires high-level clearances, engineering education, and extensive experience to interpret requirements and allocate tasks across Cisco/NGFW environments.

You will draft build-to and as-built docs and engage with cross-functional teams. Location is on-site in Herndon, VA, with responsibilities spanning LAN/WAN, VPN, QoS, and multi-firewall

Qualifications

• Active TS/SCI with Polygraph clearance and engineering degree or equivalent.
• 9+ years of related networking experience including security posture.
• Experience designing, implementing, and testing LAN/WAN solutions.

Responsibilities

• Define, maintain, and upgrade the overall security posture of the networks.
• Perform security audits of events and health, and implement improvements.
• Manage and allocate network installation and engineering tasks across devices.
• Document build-to and as-built plans for physical and logical installs.
• Collaborate with admins, storage, and developers to solve complex problems.

Skills

TS/SCI with polygraph clearance

Network design & planning

Troubleshooting networks

Documentation & testing plans

Cross-team collaboration

Education

Bachelor's degree in Engineering or related field

Tools

Cisco ASA/NGFW

Palo Alto / Juniper Firewall Manager

LAN/WAN devices

VPN (IPSec / Remote access)

QoS configuration

Job description

General Dynamics Information Technology, Inc. seeks a Network Engineer to oversee network solutions, capacity planning, and system installs. The role requires high-level clearances, engineering education, and extensive experience to interpret requirements and allocate tasks across Cisco/NGFW environments.

You will draft build-to and as-built docs and engage with cross-functional teams. Location is on-site in Herndon, VA, with responsibilities spanning LAN/WAN, VPN, QoS, and multi-firewall