Network Engineer, Senior
Listed on 2026-07-08
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Engineering
Cybersecurity, Systems Engineer -
IT/Tech
Cybersecurity, Systems Engineer
Join GDIT and be a part of the team of men and women that solve some of the world’s most complex technical challenges. The Defense Threat Reduction Agency (DTRA) Defense Stockpile Management Systems (DSMS) support is searching for a Sr. Network Engineer to join their team in Fort. Belvoir, VA.
The Sr. Network Engineer is responsible for the design, implementation, maintenance, and security of enterprise LAN/WAN environments. This role ensures strict adherence to Department of War (DoW) cybersecurity and configuration-management standards, providing critical technical leadership, Operations & Maintenance (O&M), and continuous monitoring for mission-critical networks.
Key Duties & DeliverablesInstall, configure, and maintain multi-vendor routing/switching platforms (Cisco), VPN concentrators, and F5 load balancers. Design and implement network topologies, managing complex routing protocols including OSPF, EIGRP, BGP, and MPLS.
Apply DoW STIG/SRG requirements to all network devices to maintain IAVA/IAVM compliance. Perform verification across HBSS modules and utilize enterprise automation tools to deploy secure baselines.
Responsible for ensuring 99.7% network uptime across critical and strategic enclaves, driving cybersecurity compliance through rigorous STIG/IAVA applications, and leading Network engineering initiatives during complex migrations, hardware refreshes, and network outages.
Design, plan, and execute enterprise network migrations, topology updates, and hardware refreshes (Cisco, Palo Alto, etc). Develop and maintain comprehensive network diagrams, rack elevations, and disaster recovery plans.
Monitors the network utilizing industry leading technologies. Provides innovative methods and technical solutions using the engineering design process. Coordinates LAN/WAN hardware/software improvements and/or enhancements.
Performs maintenance and upgrade of networks including servers, routers, switches, firewalls, remote access systems, and networks.
Technical ProficienciesNetwork Protocols: WAN|LAN, TCP|IP, VPN, IPS/IDS, SNMP, STP, NTP, OSPF, EIGRP, BGP, MPLS, H.323/MGCP, SIP, VRF, IEEE 802.1x|802.1q
Management & Security: Solar Winds, Remedy, Spectrum, Wireshark, ASDM, ASA, ISE, ESA, WSA, HBSS
Certifications: CCNP Enterprise, CCNP Collaboration;
CompTIA Security+ (Required for DoW 8570/8140 compliance).
Security
Clearance Required:
Active Secret Clearance
- Comprehensive benefits and wellness packages
- 401K with company match
- Competitive pay and paid time off
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