Network Security Engineer

Job Summary

Job Title: Network Security Engineer L3 Service Operations

Location: Mumbai

Type: Onsite, Rotational Shift (24 7)

Job Level: L3

Reporting to: Team Lead

As a Network and Firewall L3 Engineer, you will assist in monitoring, maintaining, optimizing, and performing advanced-level troubleshooting on network and firewall infrastructure, ensuring system stability and security. This role is ideal for someone looking to gain hands-on experience in network administration, firewall management, and advanced troubleshooting. The position requires onsite presence at both Data Centre (DC) and Office locations.

Responsibilities

• Carry out advance level configurations and troubleshooting on Network switches, Router and Firewall and networking technologies such as EVPN BGP, VXLAN, SSL VPN, IPSEC VPN, BGP.
• Extend technical support to L1, L2 and clients over the email, tickets, phone and other communications channel
• 24 7 Availability
• Provide response resolutions to Incidents, Requests, Changes, Problems as per SLA in case required escalate as per escalation matrix
• Handle escalations, Severity Incidents, Critical Projects
• Work on SIP s, Assignments
• Adhere to process procedures
• Manage Maintain availability uptime of infrastructure
• Prepare Handover checklist, POA, shift reports, KEDB, SOPs, Documentation
• Collaborate with other team members and other teams to provide resolutions
• Ensure all task, work done are captured in ticketing systems and are updated accordingly
• Ensure earlier resolutions to the issue to meet SLA.Experience handling escalations and providing L3-level support/RCA (Root Cause Analysis) for critical incidents.

Primary Skills (Must Have)

• Strong hands-on experience in configuring, managing, and troubleshooting firewalls (e.g., Palo Alto, Fortinet, Cisco ASA/Firepower, Check Point)
• In-depth knowledge of routing and switching concepts (OSPF, BGP, EIGRP, VLANs, STP)
• Strong hands-on experience with BGP (eBGP/iBGP, route reflectors, route policies, path attributes) in Data Centre environments
• Working knowledge of VXLAN overlay networking (VTEPs, VNI mapping, underlay/overlay design) and EVPN as its control plane, including MAC/IP route advertisement and multi-tenancy
• Understanding of Spine-Leaf Data Centre fabric architectures built on BGP EVPN VXLAN
• Expertise in VPN technologies (Site-to-Site, IPSec, SSL VPN, Remote Access VPN)
• Experience with network security concepts NAT, ACLs, IPS/IDS, DMZ architecture, Zone-Based Firewalls
• Proficiency in troubleshooting network connectivity, latency, and performance issues at L3 level
• Sound knowledge of network monitoring tools (SolarWinds, PRTG, Nagios, or similar)

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