Senior Network Administrator - TS/SCI with Polygraph

General Dynamics
Washington
Workplace: OnsiteFull timeUSD 124,093 - 161,000 annuallyFunction: IT Operations (Systems/Network Admin)Experience: 6+ yearsSkills: ["Independent execution","Troubleshooting","Root cause analysis","Capacity planning","Mentorship"]

Design, install, configure, and maintain enterprise LAN/WAN networks, including routers, switches, firewalls, and VPNs. Build new network environments and perform advanced troubleshooting using routing protocols such as OSPF, RIP, and BGP, along with VLANs, trunking, STP/RSTP/MST, EtherChannel/LACP, and inter-VLAN routing. Enforce security via ACLs and DoD/DISA STIG baselines, administer Cisco ASA and next-generation firewall platforms, and support modernization through capacity planning and mentorship.

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General Dynamics
General Dynamics
4 hours ago

Senior Network Administrator - TS/SCI with Polygraph

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Source: Company careers pageValidated by: Fursa AI
Last checked: 4 hours agoStatus: Live

Job Summary

Design, install, configure, and maintain enterprise LAN/WAN networks, including routers, switches, firewalls, and VPNs. Build new network environments and perform advanced troubleshooting using routing protocols such as OSPF, RIP, and BGP, along with VLANs, trunking, STP/RSTP/MST, EtherChannel/LACP, and inter-VLAN routing. Enforce security via ACLs and DoD/DISA STIG baselines, administer Cisco ASA and next-generation firewall platforms, and support modernization through capacity planning and mentorship.
Location: Washington
Workplace: Onsite
Employment Type: Full time
Job Function: IT Operations (Systems/Network Admin)
Seniority: Mid level

Key Responsibilities

  • •Install, configure, and maintain enterprise LAN/WAN infrastructure (routers, switches, firewalls, VPNs).
  • •Independently design and build new network environments, including topology and configuration/architecture planning.
  • •Configure and troubleshoot dynamic routing protocols, including OSPF, RIP, and BGP.
  • •Configure and enforce network security controls, including ACLs, firewall policy management, and DoD/DISA STIGs/baselines.
  • •Monitor, optimize, and troubleshoot network performance and provide advanced root-cause analysis and capacity planning support.

Pay and Benefits

Salary: USD 124,093 - 161,000 annually
Perks:401kPaid LeaveHealth InsuranceDentalVision

Key Requirements

  • •Active TS/SCI with Polygraph security clearance.
  • •8+ years of technical training, certification(s), or degree plus experience in network administration.
  • •Minimum CCNA; DoD Manual 8570.01-M (IAT Level II) required; CCNP preferred.
  • •Strong hands-on knowledge of OSPF, RIP, and BGP routing (Layer 3) and standard ACLs.
  • •Experience configuring/maintaining enterprise Layer 2 switching, VLAN/trunking (802.1Q), inter-VLAN routing, and STP/RSTP/MST management.
Experience:6+ yearsEnterprise ITDefense and intelligenceNetworkingNetwork infrastructure
Skills:Independent executionTroubleshootingRoot cause analysisCapacity planningMentorship
Certifications:DoD Manual 8570.01-M (IAT Level II)Cisco Certified Network Associate (CCNA)Cisco Certified Network Professional (CCNP)
Tech Stack:CiscoJuniperCatalystNexusEXQFXCisco ASACisco FirepowerPalo AltoJuniper SRXOSPFRIPBGPACLsVLANs802.1QInter-VLAN routingSTPRSTPMST

Eligibility

Work Authorization:Authorization required. Sponsorship not provided.
Security Clearance:Top Secret/SCI

Company Brief

General Dynamics
Provides IT, systems engineering, cybersecurity, cloud, and mission support services to U.S. federal civilian and defense agencies, delivering large-scale technology solutions and managed services for national security and government operations.
Industry: Defense Technology
Company Size: Enterprise (1,001+ employees)
Growth: Established Company
Headquarters: Tysons / Fairfax, United States
WebsiteLinkedIn