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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Engineer SME (TS/SCI with Poly Required) - **Company:** GCI, Inc. - **Location:** McLean, VA, United States - **Contract:** Permanent contract - **Skills:** Border Gateway Protocol, Cloud Computing, System Configuration, Multi-Factor Authentication, Enhanced Interior Gateway Routing Protocol, Networking Hardware, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Network Architecture, Network Monitoring, Open Shortest Path First (OSPF), Remote Access Technology, Software Engineering, Wide Area Networks, Network Routing, Network Routers, Any Transport over MPLS, Firewalls (Computer Science), Juniper, Computer Equipment, Data Analytics, Cyber Warfare, Cisco - **Published:** October 17, 2026 - **Apply:** https://www.careerbuilder.com/job-details/network-engineer-sme-ts-sci-with-poly-required-mclean-va--46f62ccd-38ed-4b2b-b2e2-90c0d9834260 ## About the Role * Experience in IPSec site-to-site VPN * Experience in Remote access VPN * Experience configuring, designing, maintaining, and troubleshooting LAN/WAN devices * Thorough understanding of network routing concepts (EIGRP, OSPF, BGP, IP MPLS) * Basic understanding of QoS concepts * Experience with network monitoring technologies * Expertise in deploying Cisco, or Juniper firewall Manager servers * Experience engineering and deploying cloud-based and on-prem network firewall solutions * Experience designing, engineering, and deploying controlled interfaces * Ability to take customer requirements or problems and convert them into technical solutions * Ability to partner with systems administrators to solve complex problems * Complex problem management research and issue resolution, * Experience configuring, designing, and troubleshooting QoS in LAN or WAN devices * Experience design, engineering, and deploying Multi-Factor Authentication solution * A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance. ## Description GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry.At GCI, we solve the hard problems. As an Expert Network Engineer, a typical day will include the following duties:KEY RESPONSIBILITIESDesigns and plans network communications to include on-prem and cloud-based systemsProvides specifications and detailed schematics for network architecturePlans implementation of enhancements and security upgrades to the networkConducts hands-on setup, configuration, testing, and troubleshooting of on-site network infrastructureConducts testing of network infrastructure using industry practicesMonitors network hardware and virtual (cloud) device operations to ensure properly functioning networks and capabilitiesAdvises network users of hardware needs, configurations, and limitationsProvides troubleshooting assistance and guidance to other team members as well as end users of the network(s)Provides detailed recommendations for hardware and software selection, implementation techniques, and toolsProvides technical expertise in all areas of network and computer hardware and software interconnection and interfacing, such as routers, switches, firewalls, bridges, gateways, etc.Evaluates and reports on changing or end of life technologies to ensure capabilities of the network remain up to date and secureREQUIRED QUALIFICATIONSExperience in IPSec site-to-site VPNExperience in Remote access VPNExperience configuring, designing, maintaining, and troubleshooting LAN/WAN devicesThorough understanding of network routing concepts (EIGRP, OSPF, BGP, IP MPLS)Basic understanding of QoS conceptsExperience with network monitoring technologiesExpertise in deploying Cisco, or Juniper firewall Manager serversExperience engineering and deploying cloud-based and on-prem network firewall solutionsExperience designing, engineering, and deploying controlled interfacesAbility to take customer requirements or problems and convert them into technical solutionsAbility to partner with systems administrators to solve complex problemsComplex problem management research and issue resolutionDESIRED QUALIFICATIONSExperience configuring, designing, and troubleshooting QoS in LAN or WAN devicesExperience design, engineering, and deploying Multi-Factor Authentication solutionA candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans