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Network Engineer - TS/SCI w/Polygraph

Company: General Dynamics IT
Location: Herndon, VA
Employment Type: Full Time
Date Posted: 07/31/2026
Job Categories: Engineering, Information Technology

Job Description

Network Engineer - TS/SCI w/Polygraph
At GDIT, people are our differentiator. As a Network Engineer, you will help ensure today is safe and tomorrow is smarter. Our work depends on the Network Engineer joining our team will provide technical oversight of a project solution, including requirement interpretation and allocation of requirements to technical components. Candidate should be able to define internal and external customer IT infrastructure architecture needs and then design solutions to meet those needs to include: capacity planning, systems configuration and tuning, monitoring backups, and installations of hardware and software. Candidates will be required to work independently with little supervision and should be flexible to work and support IT Operations needs as requested. HOW A NETWORK ENGINEER WILL MAKE AN IMPACT:Define, maintain, and upgrade the overall security posture of the networksWill perform security audits of events, overall health and implement changes to improve the overall programs security posture.Manage and allocate network installation and engineering tasks, configure and maintain communications systems, familiarity with implementation of LAN and WAN equipment including firewalls, servers, workstations, routers, switches, hubs, storage devices, A/V equipment and equipment racksAbility to write and edit build-to and as-built documentation, as well as implementation and test plans for physical and logical installs of IT equipmentAble to engage in technical system planning beyond the network, to include applications and systems that utilize the network being deliveredProvides expert level analysis of voice, video, and/or data communications networks, including planning, designing, evaluating, selecting, and upgrading operating systems and protocol suitesAble to plan network layouts and configures systems to user environmentsMay provide technical support and troubleshooting to users. (Tier I, II, and III) WHAT YOULL NEED TO SUCCEED:The position requires an active TS/SCI with Polygraph clearanceBachelors or Technology degree in Engineering or a related specialized area/field, OR equivalent 9 years job-related experience5+ years of related Network Engineering experience3+ years of experience configuring/maintaining Cisco ASA/Next Generation Firewall4 + years of experience configuring, designing, maintaining, and troubleshooting LAN/WAN devices. Thorough understanding of network routing concepts (EIGRP, OSPF, BGP, IP MPLS)Experience allowing voice, video traffic across port-based firewall and NGFWExperience deploying Cisco, Palo Alto, or Juniper firewall Manager serversExperience in engineering and deploying multi firewall solutionsExperience design, engineering, and deploying controlled interfaces (5 + years)Experience design, engineering, and deploying firewall vendor transitioning plansExperience design, engineering, and deploying firewall in a multicast network environmentExperience IPSec site-to-site VPN utilizing PKI (CA)Experiences Remote access VPNBasic understanding of QoS conceptsExperience with network monitoring technologiesAbility to take ambiguous requirements or problems and convert them into technical solutionsAbility to partner with systems administrators, storage administrators, and application developers to solve complex problemsComplex problem management research and issue resolutionExcellent organizational, coordination, interpersonal and team building skillsProven problem-solving skills in complex environmentsLocation: At Customer Site Herndon Area DESIRED QUALIFICATIONS:Experience configuring, designing, and troubleshooting QoS in LAN or WAN devicesJuniper, Palo Alto, or Cisco Next Generation Firewalls Certifications and hands on experienceExperience design, engineering, and deploying Muli-Factor Authentication solutionExperience design, engineering, and deploying Zero-Trust solutions GDIT IS YOUR PLACE:401K with company matchComprehensive health and wellness packagesInternal mobility team dedicated to helping you own your careerProfessional growth opportunities including paid education and certificationsCutting-edge technology you can learn fromRest and recharge with paid vacation and holidays #GDITCareers #GDITPolyEvent #GDITEnhanced2026 #MissionPoly2026 #VA_2026Alumni #CJPost #Jet