IT Network Administrator

IT Network AdministratorOn-Site - Lawrenceville, GA 30046- Local Required Only NOC Network Admin position On-Site: This position will be required to report on-site.CertificationsNetworking: CCNA, or CompTIA Network+Position DescriptionWe are seeking a highly skilled and technically proficient NOC Technician to support Tier 1–2 network, systems, and cloud infrastructure operations in a mission-critical 24x7x365 environment. You will be responsible for the proactive monitoring, troubleshooting, and resolution of issues impacting a large-scale LAN/WAN architecture across over 100 county wide sites, including core IP networking, virtualization platforms, hybrid cloud environments (AWS, Azure, GCP), and SaaS integrations. This role includes hands-on support of routers, switches, firewalls, wireless infrastructure, and various connected devices. You will also manage escalations, execute standard changes, and contribute to documentation and continuous improvement.Minimum QualificationsAssociate's or Bachelor's degree in IT, Computer Science, or equivalent hands-on experience 2–4+ years of experience in a NOC or enterprise IT operations environment Familiarity with Cisco Enterprise Networks and Cisco Command Line Familiarity with ITIL-based incidents, problems, and change managementPreferred Technical SkillsNetworking Deep understanding of TCP/IP, VLANs, ACLs, EIGRP, OSPF, NAT, and multicast Configuration and troubleshooting of Cisco routers/switches: 2900, 3800, 3900 routers; 2900, 3500, 3700, 9200, 9300, 9500, IE2K/4K/5K series switches Experience with Cisco Wireless LAN Controllers and wireless networks on a large scale Familiarity with SNMP, NetFlow/sFlow, Wireshark/tcpdump Experience with SD-WAN, MPLS, and VPN (IPSec/SSL) Knowledge of Layer 1–4 troubleshooting and infrastructure design for 50+ site environmentsPreferred ExperienceInfrastructure Monitoring & Incident Response Monitor enterprise infrastructure using tools such as SolarWinds, Cisco Catalyst Center, Cisco Client, Palo Alto Panorama, etc. Triage and respond to system-generated alerts and logs across network, server, and cloud environments Perform root cause analysis (RCA) and escalate to Tier 2/3 engineering teams as necessary Network & Systems Operations Configure and support LAN/WAN connectivity for user devices (PCs, VOIP phones, printers, IoT, card readers, body-worn cameras) Troubleshoot and maintain DHCP reservations, DNS configurations, firewall rules, ACLs, and VLAN assignments Maintain connectivity between internal systems, cloud resources, and remote users (VPN, NetMotion, Ipsec/SSL) Security & Compliance Block malicious IPs in real-time per InfoSec team guidance Manage VPN access for county employees and third-party vendors Support physical security infrastructure (cameras, intercoms) across 100+ sites using Avigilon Field & Physical Layer Support Perform cabling verification and troubleshooting for network patching Use tools such as Fluke DTX testers to validate copper and fiber connections Coordinate with low-voltage cabling vendors for installations and escalations Operational Management Use TeamDynamix Service Management for ticket handling and workflow tracking Maintain NOC SOPs, technical documentation, and operational runbooks Participate in on-call rotations and after-hours emergency support RIT Solutions