Job
Description
Title : Tier 3 Network Engineer Job Description : Diagnose and resolve complex Layer 2/Layer 3 network issues across Enterprise Environments. Design, configure, and deploy scalable and secure network infrastructure solutions. Provide Tier 3 escalation support for incidents unresolved by Tier 1 and Tier 2 teams. Administer and troubleshoot enterprise-grade routing, switching, firewalls, VPN, and load balancing technologies. Required Skills and Technologies Must-Have : 5+ years network engineering in medium to large enterprise Deep knowledge of TCP/IP, BGP, OSPF, EIGRP Experience with Cisco, Juniper, or similar enterprise-grade equipment Network monitoring and diagnostic tools (e.g., Wireshark, Netflow, Prime, Catalyst Center, vManage [Cisco Viptela SDWAN]) Strong troubleshooting and analytical skills Nice-to-Have : Network automation (Python, Ansible) Solarwinds Netflow Fortigate/FortiManager/FortiAuthenticator/FortiAnalyzer MPLS/VPLS Cellular Gateways/Technology (OpenGear/Cradlepoint) Key Protocols and Technologies Routing Protocols : OSPF, BGP, EIGRP (especially for hybrid environments) Switching Technologies : VTP, RSTP/MSTP, Private VLANs, Port Security Wireless Protocols : 802.11a/b/g/n/ac/ax, WPA2/WPA3, RADIUS/802.1X SD-WAN Protocols : OMP (Overlay Management Protocol), IPSec, DTLS, BFD Network Services : DHCP Snooping, ARP Inspection, NetFlow, SPAN/RSPAN Security : ACLs, Zone-Based Firewall, AAA, ISE integration Monitoring & Management : SNMP, Syslog, NetFlow, Cisco Prime, DNA Center Certifications to Look For Cisco Certified Network Professional (CCNP) Enterprise Cisco Certified Specialist Enterprise Core (ENCOR) Cisco Certified Internetwork Expert (CCIE) – a plus Cisco SD-WAN Specialist – highly relevant
