Senior Network Architect TS/SCI with Poly | Onsite

General Dynamics Information Technology; Washington (District of Columbia); On-site; USD 124,000 - 161,000; Full time

Benefits offered by this job

Comprehensive benefits and wellness

401K with company match

Competitive pay and paid time off

Job summary

General Dynamics Information Technology (GDIT) is seeking a Network Computer Systems Administrator to install, configure, and manage enterprise LAN/WAN infrastructure for government networks. You will handle routers, switches, firewalls, and VPNs while designing and building new network environments and ensuring security.

The role emphasizes DoD requirements, collaboration with engineering teams, and on-site work in Washington, DC, with a compensation range reflecting DoD/Intelligence sector

Qualifications

• Required Education and Experience: Technical Training, Certification(s) or Degree + 8 years
• Certifications: DoD 8570.01-M at IAT Level II and CCNA minimum; CCNP preferred
• Security Clearance Level: Active TS/SCI with Polygraph
• Location: 100% On-Site required
• Strong knowledge of OSPF, RIP, and BGP routing protocols
• Knowledge of standard ACLs for security and traffic filtering
• Strong knowledge of Cisco routing and switching technologies
• VLAN design, trunking, inter-VLAN routing, STP/RSTP/MST management
• Experience with EtherChannel/LACP for redundancy
• Ability to configure and manage Cisco ASA appliances
• Knowledge of VPN technologies and secure remote access
• Familiarity with DoD/DISA STIGs and security baseline enforcement
• Ability to work independently and drive tasks to completion

Responsibilities

• Install, configure, and maintain enterprise LAN/WAN infrastructure, including routers, switches, firewalls, and VPNs.
• Independently design and build new network environments, including topology, configuration, and architecture planning.
• Configure and troubleshoot dynamic routing protocols, including OSPF, RIP, and BGP.
• Configure and apply standard ACLs to enforce security and traffic policies.
• Configure, maintain, and troubleshoot Cisco/Juniper enterprise switching environments (Catalyst, Nexus, EX, QFX).
• Design and implement VLANs, trunking (802.1Q), and inter-VLAN routing to support multi-tenant environments.
• Manage STP/RSTP/MST for loop-free topology and rapid convergence.
• Deploy EtherChannel/LACP for link redundancy and throughput optimization.
• Administer, configure, and manage Cisco ASA appliances, including VPN solutions and secure remote access.
• Implement and manage firewall platforms (Cisco ASA/Firepower, Palo Alto, Juniper SRX) with security hardening.
• Enforce DoD/DISA STIGs and security baselines across network infrastructure.
• Monitor, optimize, and troubleshoot network performance for high availability, reliability, and security.

Skills

Network Infrastructures

Networking Hardware

Network Systems

Job description

General Dynamics Information Technology (GDIT) is seeking a Network Computer Systems Administrator to install, configure, and manage enterprise LAN/WAN infrastructure for government networks. You will handle routers, switches, firewalls, and VPNs while designing and building new network environments and ensuring security.

The role emphasizes DoD requirements, collaboration with engineering teams, and on-site work in Washington, DC, with a compensation range reflecting DoD/Intelligence sector