Senior Network Engineer, TS/SCI | WAN/LAN Security

General Dynamics Information Technology, Inc.; St. Louis (MO); On-site; USD 111,000 - 150,000; Full time

Job summary

General Dynamics Information Technology, Inc. seeks an experienced Network Engineer to support wide- and local-area networks across multiple security domains for an Intelligence Community client.

You will lead modernization efforts and ensure ongoing operation of mission-critical infrastructure. Responsibilities include coordinating installation and monitoring activities, implementing enterprise network capabilities, and troubleshooting complex WAN/LAN environments with a focus on security and

Qualifications

• Active TS/SCI clearance with ability to obtain a Polygraph.
• BS degree or equivalent experience.
• 8+ years of hands-on experience with network and transport technologies, tools, and techniques.
• 4+ years supporting large-scale enterprise or global networks in a fast-paced environment.
• Active 8570/8140 Approved IAT II certification required.
• Working knowledge of DoD Architecture Framework and related DoW network architecture guidance.
• Experience with Juniper network devices (MX, EX, SRX) and cryptographic devices (KG‑175G/X, KG‑245A/X).
• Proficiency with network analysis tools (HP/Microfocus NA/NNM, Juniper Secure Analytics, Infoblox, Riverbed).
• Experience with Juniper firewall/VPN technologies (SRX series).
• Experience supporting IP services for NIPRNET, SIPRNET, and JWICS (IPv4/IPv6, VPN, Multicast, QoS, SDN, SNMP, VOIP, VTC).
• Strong understanding of OSPF, BGP, MPLS, RSVP/LDP VPNs, VRFs, IKE/IPSec, GRE tunnels, MTU, FTP, and routing policy frameworks.

Responsibilities

• Coordinate system maintenance, monitoring, and installation activities across WAN/LAN environments.
• Research, recommend, and implement enterprise network capabilities aligned with mission objectives.
• Troubleshoot and resolve issues with network media, components, and connectivity.
• Evaluate and monitor network health, performance, and hardware/software effectiveness.
• Develop and maintain technical roadmaps for network capabilities and operations.
• Create and execute detailed test plans and documentation for network changes.
• Support network traffic analysis and bandwidth optimization for performance targets.
• Assess emerging network technologies and provide recommendations.
• Adhere to customer security policies and compliance requirements.
• Represent customer requirements during technical exchanges with partner agencies.
• Conduct site surveys for new installations and refresh initiatives.
• Install, maintain, and troubleshoot satellite communications equipment.
• Create and maintain network architecture diagrams.

Skills

Cisco

CISSP

LAN

Transport Technologies

WAN Networking

Education

Bachelor's degree or equivalent

Tools

Juniper MX

Juniper EX

Juniper SRX

KG‑175G/X

KG‑245A/X

HP/Microfocus NA/NNM

Juniper Secure Analytics

Infoblox

Riverbed

Job description

General Dynamics Information Technology, Inc. seeks an experienced Network Engineer to support wide- and local-area networks across multiple security domains for an Intelligence Community client.

You will lead modernization efforts and ensure ongoing operation of mission-critical infrastructure. Responsibilities include coordinating installation and monitoring activities, implementing enterprise network capabilities, and troubleshooting complex WAN/LAN environments with a focus on security and