Network Administrator Intermediate – TS/SCI required

Summary

General Dynamics Information Technology (GDIT) is a global technology and professional services company delivering technology solutions and mission services to government, defense, and intelligence organizations. The Network Administrator Intermediate will support Army Intelligence by securing enterprise systems, maintaining reliable network connectivity, administering network infrastructure, troubleshooting routing and connectivity issues, and ensuring compliance with cybersecurity requirements.

Responsibilities

• Oversee the installation, maintenance, and usage of the local area network. Support routing and connectivity configurations using OSPF, BGP, GRE tunnels, and DMVPN. Assist with evaluating solutions, presenting recommendations to management, and supporting hardware, software, and telecommunications installations
• Work with network services, systems engineering, and application development teams to restore service and resolve core issues. Recommend system improvements that enhance stability and performance, including adjustments to routing protocols or tunnel‑based connectivity
• Monitor and maintain network performance and security. Troubleshoot routing and connectivity issues, ensure policies and procedures are enforced, and maintain compliance with organizational objectives
• Install, configure, and evaluate network hardware and software, including routers, firewalls, and telecommunications systems. Support advanced carrier‑side configurations such as MPLS and L3VPN (BGP AFI vpnv4). Use diagnostic tools and monitoring techniques to ensure optimal network operations
• Administer networking hardware including routers, switches, gateways, access points, firewalls, and related components
• Maintain strong knowledge of fiber and copper Ethernet technologies and their use across LAN and WAN environments, including support for GRE, DMVPN, and MPLS‑based circuits
• Provide troubleshooting and technical support for network infrastructure, routing protocols, and tunnel‑based connectivity
• Provide end‑user support and assist with training related to network operations
• Administer network security, perform backups, and provide maintenance support for servers
• Create and manage user accounts and ensure proper access control
• Follow and enforce established network policies, procedures, and security standards, ensuring all network configurations comply with applicable STIG and DoW Cybersecurity requirements
• Install and manage hardware, including systems that interface with MPLS or L3VPN services
• Support implementation, configuration, performance monitoring, and troubleshooting across all network infrastructure
• Support lifecycle replacement of network hardware as directed

Skills

• Top Secret/SCI
• Computer Servers, Network Infrastructures, Network Systems
• 7 + years of related experience
• Yes
• Associate degree (may be waived based on overall experience and qualifications)
• 7 years of experience (may be waived for candidates with strong network administration proficiency)
• Routing & Switching: OSPF, BGP, VLANs, STP, and QoS fundamentals
• Network Hardware: Routers, switches, firewalls, wireless access points
• Operating Systems: Windows and Linux administration fundamentals
• Tools & Monitoring: Network analyzers, packet capture tools, and performance monitoring platforms
• Security: Access control, network hardening, and compliance with DoW Cybersecurity requirements
• GRE tunnels, DMVPN, IPSec fundamentals
• MPLS (LDP), L3VPN (BGP AFI vpnv4) exposure preferred
• TS/SCI
• DoW 8570.01-M IAT Level II/8140 Computing Environment (CE) Certification as determined by the Program Manager is required prior to support on contract
• IAT II 8570/8140 Baseline Certification Security+ or equivalent
• Computing Environment certification: CCNA or CCNA-Security
• Candidates must be willing and able to attain a CI Polygraph for certain positions as determined by the contract
• WAN Technologies: MPLS (LDP), L3VPN (BGP AFI vpnv4) exposure preferred

Qualifications

Must Haves

• Top Secret/SCI
• Computer Servers, Network Infrastructures, Network Systems
• 7 + years of related experience
• Yes
• Associate degree (may be waived based on overall experience and qualifications)
• 7 years of experience (may be waived for candidates with strong network administration proficiency)
• Routing & Switching: OSPF, BGP, VLANs, STP, and QoS fundamentals
• Network Hardware: Routers, switches, firewalls, wireless access points
• Operating Systems: Windows and Linux administration fundamentals
• Tools & Monitoring: Network analyzers, packet capture tools, and performance monitoring platforms
• Security: Access control, network hardening, and compliance with DoW Cybersecurity requirements
• GRE tunnels, DMVPN, IPSec fundamentals
• MPLS (LDP), L3VPN (BGP AFI vpnv4) exposure preferred
• TS/SCI
• DoW 8570.01-M IAT Level II/8140 Computing Environment (CE) Certification as determined by the Program Manager is required prior to support on contract
• IAT II 8570/8140 Baseline Certification Security+ or equivalent
• Computing Environment certification: CCNA or CCNA-Security
• Candidates must be willing and able to attain a CI Polygraph for certain positions as determined by the contract

Nice to Haves

• WAN Technologies: MPLS (LDP), L3VPN (BGP AFI vpnv4) exposure preferred

Benefits

• AI-powered career tool that identifies career steps and learning opportunities.
• An internal mobility team focused on helping you achieve your career goals.
• Comprehensive benefits and wellness packages.
• 401K with company match.
• Paid time off.
• Medical plan options, some with Health Savings Accounts.
• Dental plan options.
• A 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match.
• Full flex work weeks where possible.
• Vacation, sick and personal time.
• Paid holidays.
• Paid parental leave.
• Paid military leave.
• Paid bereavement leave.
• Paid jury duty leave.
• Short- and long-term disability benefits.
• Life insurance.
• Accidental death and dismemberment insurance.
• Personal accident insurance.
• Critical illness insurance.
• Business travel and accident insurance.