Senior Network Engineer – TS/SCI with Polygraph

General Dynamics Information Technology

. Coordinate system maintenance, monitoring, and installation activities across diverse WAN/LAN environments and technologies .

Posted 4/30/2026full-timeSpringfield • Montana, Virginia • 🇺🇸 United StatesSenior💰 $111,155 - $150,385 per yearWebsite

Tech Stack

Tools & technologies

TypeScriptVoIP

About the role

Key responsibilities & impact

Coordinate system maintenance, monitoring, and installation activities across diverse WAN/LAN environments and technologies
Research, recommend, and implement enterprise network capabilities and enhancements aligned with mission and business 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, operations, and technologies
Create and execute detailed test plans and documentation for all network configuration changes, upgrades, and additions
Support network traffic analysis and bandwidth optimization to meet performance and availability targets
Assess and provide recommendations on emerging network and communication technologies
Recommend upgrades and changes aligned with industry standards and best practices
Adhere to all customer network security policies, procedures, and compliance requirements
Represent customer requirements and priorities during technical exchanges with partner agencies
Conduct site surveys for new installations and technology refresh initiatives
Install, maintain, and troubleshoot satellite communications equipment
Create and maintain network architecture diagrams

Requirements

What you’ll need

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, diverse 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, etc.)
Strong understanding of OSPF, BGP, MPLS, RSVP/LDP Layer 2/3 VPNs, VRFs, IKE/IPSec, GRE tunnels, MTU, FTP, and routing policy frameworks

Benefits

Comp & perks

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts
dental plan options
a vision plan
a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match
To encourage work/life balance
GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave
To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network technologiestransport technologiesnetwork troubleshootingnetwork performance monitoringnetwork configuration managementnetwork traffic analysisbandwidth optimizationnetwork architecture designIP servicesrouting protocols

Soft Skills

communicationproblem-solvingcollaborationtechnical documentationcustomer requirements representation

Certifications

Active TS/SCI clearance8570/8140 Approved IAT II certification