Network Engineer 3

Primus Global Technologies; Chennai District; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Primus Global Technologies in Chennai, India, seeks an L3 Network Engineer to manage advanced troubleshooting, design, and deployment of enterprise networks and data centers.

You will handle escalations, implement routing and switching solutions, and work with security, VPN, and load balancer technologies while mentoring junior staff.

Qualifications

• Experience designing and supporting enterprise networks and data centers.
• Strong routing knowledge: BGP, OSPF, EIGRP, ISIS.
• Hands-on with switching: VLAN, STP, ACL, and VXLAN/EVPN.
• Firewall, VPN IPSec/SSL, IDS/IPS, and security policy experience.
• Familiar with ITIL-aligned change management and RCA.
• Mentor L1/L2 teams and support escalations.

Responsibilities

• Act as final escalation (L3) for complex LAN/WAN, WLAN, VPN, and Data Center issues.
• Handle P1/P2 incidents, perform deep packet analysis, and create RCA.
• Design and implement network solutions; contribute to HLD/LLD.
• Deploy and support BGP, OSPF, EIGRP, ISIS, MPLS, VXLAN/EVPN.
• Implement and maintain configurations for routers, switches, firewalls, and load balancers.
• Configure and troubleshoot firewalls, IPSec/SSL VPNs, IDS/IPS, and security policies.
• Perform performance optimization, QoS tuning, and capacity planning.
• Support network upgrades, migrations, and new site rollouts.
• Prepare and execute change requests with risk and rollback plans (ITIL aligned).
• Coordinate with OEM TAC teams and ISPs for escalations and new links.
• Maintain documentation, network diagrams, SOPs, and mentor L1/L2 teams.
• Experience with copper and fiber cabling.
• Troubleshoot physical layer issues and maintain asbuilt cabling documentation.
• Support data center expansions and new site deployments.

Skills

BGP

OSPF

EIGRP

ISIS

VXLAN/EVPN

STP

VLAN

ACL

Firewall

VPN IPSec/SSL

IDS/IPS

WLAN

F5/A10

Cisco

H3C

Aruba

Palo Alto

Fortinet

Check Point

Extreme

SDWAN

Packet capture

Tools

Cisco

H3C

Aruba

Palo Alto

Fortinet

Check Point

Extreme

SDWAN

Packet capture

Job description

L3 Network Engineer Job Description

Responsible for advanced troubleshooting, design, implementation, and support of enterprise and data center networks. Acts as final escalation point and supports critical incidents, new deployments, and network optimization.

Key Responsibilities

• Act as final escalation (L3) for complex LAN/WAN, WLAN, VPN, and Data Center issues.
• Handle P1/P2 incidents, perform deep packet analysis, and create RCA.
• Design and implement network solutions; contribute to HLD/LLD.
• Deploy and support BGP, OSPF, EIGRP, ISIS, MPLS, VXLAN/EVPN.
• Implement and maintain configurations for routers, switches, firewalls, and load balancers.
• Configure and troubleshoot firewalls, IPSec/SSL VPNs, IDS/IPS, and security policies.
• Perform performance optimization, QoS tuning, and capacity planning.
• Support network upgrades, migrations, and new site rollouts.
• Prepare and execute change requests with risk and rollback plans (ITIL aligned).
• Coordinate with OEM TAC teams and ISPs for escalations and new links.
• Maintain documentation, network diagrams, SOPs, and mentor L1/L2 teams.
• Experience with copper and fiber cabling.
• Troubleshoot physical layer issues and maintain asbuilt cabling documentation.
• Support data center expansions and new site deployments.

Required Skills

• Routing: BGP, OSPF, EIGRP, ISIS
• Switching: STP, VLAN, VTP, ACL, EtherChannel, VXLAN/EVPN
• Security: Firewalls, VPN (IPSec/SSL), IDS/IPS
• Wireless: WLAN Controllers, AP design basics
• Load Balancers: F5 / A10
• OEMs: Cisco, H3C, Aruba, Palo Alto, Fortinet, Check Point, Extreme, SDWAN
• Tools: Packet capture and traffic analysis tools