Network Administrator Senior

General Dynamics
United States
Workplace: OnsiteFull timeUSD 106,250 - 143,750 annuallyFunction: IT Operations (Systems/Network Admin)Experience: 3+ yearsSkills: ["Troubleshooting","Analytical thinking","Communication","Documentation","Methodical problem solving"]

Support enterprise network operations for a federal customer by troubleshooting incidents, implementing secure network changes, and collaborating with network engineers, system administrators, and security teams. Help deploy and maintain physical infrastructure, cabling, and fiber work while managing network access control with Cisco ISE and DNA Center. Configure VLANs, routing policies, segmentation, and VPN/firewall controls, and use packet capture tools to analyze and improve high-performance network services.

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FursaFursa
General Dynamics
General Dynamics
2 days ago

Network Administrator Senior

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 1 hour agoStatus: Live
Reposted: similar role first listed 5 months ago

Job Summary

Support enterprise network operations for a federal customer by troubleshooting incidents, implementing secure network changes, and collaborating with network engineers, system administrators, and security teams. Help deploy and maintain physical infrastructure, cabling, and fiber work while managing network access control with Cisco ISE and DNA Center. Configure VLANs, routing policies, segmentation, and VPN/firewall controls, and use packet capture tools to analyze and improve high-performance network services.
Location: United States
Workplace: Onsite
Employment Type: Full time
Job Function: IT Operations (Systems/Network Admin)
Seniority: Mid level

Key Responsibilities

  • •Work closely with senior network engineers, system administrators, and security teams to troubleshoot issues, resolve incidents, and implement network changes.
  • •Participate in network design discussions and support deployments, including equipment setup, cabling, fiber work, and physical infrastructure buildouts.
  • •Use Cisco ISE and DNA Center (DNA-C) to manage network access control, policy-based automation, and assurance.
  • •Implement and manage VLANs, routing policies, access control rules, and network segmentation to support secure, scalable environments.
  • •Enforce firewall rules, VPN configurations, and network access control policies to maintain secure network environments for compliance and cyber defense objectives.
Travel: Low travel

Pay and Benefits

Salary: USD 106,250 - 143,750 annually
Perks:Health InsuranceDentalVision401kPaid LeavePaid Parental

Key Requirements

  • •3+ years of experience supporting network switches and routers, with strong TCP/IP fundamentals.
  • •Hands-on experience with Cisco ISE and Cisco DNA Center (DNA-C) for network access control and automation.
  • •Proficiency with VLANs, trunking, inter-VLAN routing, network segmentation, and routing fundamentals.
  • •Knowledge of firewalls, ACLs, NAT, VPN technologies, and network access control systems (RADIUS, TACACS+, 802.1X).
  • •CompTIA Security+ and CCNA, with TS/SCI clearance capability.
Experience:3+ yearsEnterprise networkingFederalNetwork operations
Skills:TroubleshootingAnalytical thinkingCommunicationDocumentationMethodical problem solving
Certifications:CompTIA Security+Cisco Certified Network Associate (CCNA)
Tech Stack:Cisco ISEDNA CenterDNA-CCiscoVLANTCP/IPDNSDHCPSTPSNMPRoutingFirewallsACLNATVPNWiresharkNetFlowRADIUSTACACS+802.1X

Eligibility

Nationality:US National
Security Clearance:Top Secret/SCITS/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