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Senior Network Engineer - TS/SCI Polygraph
Job in
Springfield, Fairfax County, Virginia, 22161, USA
Listed on 2026-07-06
Listing for:
General Dynamics Information Technology
Full Time
position Listed on 2026-07-06
Job specializations:
-
IT/Tech
Network Engineer, Systems Engineer, Cybersecurity
Job Description & How to Apply Below
Location: Springfield, VA (Customer Site)
Travel: Approximately 25%
Clearance: Active TS/SCI with ability to obtain a Polygraph
Citizenship: US Citizenship Required
GDIT has an exciting and challenging opportunity for a Network Engineer supporting an Intelligence Community customer’s wide‑area (WAN), local‑area (LAN), and campus‑area (CAN) networks across multiple security domains. In this role, you will support new engineering initiatives, lead efforts around network modernization, and ensure the sustained operation of mission‑critical infrastructure.
Responsibilities- 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.
- 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.
- Master’s degree in Computer Science or related field.
- Professional certifications such as JNCIA, JNCIS, JNCIP, CCNP, CCVP, CCNA, or CCDP.
- ITIL v3 Foundations.
- ISC2 CISSP.
Position Requirements
10+ Years
work experience
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