Role & responsibilities

Job Description L3 Engineer(Network & Security)

Experience Required: 7–9+ Years

Location: Mumbai (Hybrid) – 24X7 support.

Role Summary

We’re looking a skilled Network & Security Specialist to oversee and enhance the security posture of a large-scale BFSI network infrastructure spanning multiple data centres. This role demands hands-on expertise in managing firewalls, VPNs, load balancers, switches, routers and IDS/IPS systems, with a robust focus on availability, compliance, and proactive threat mitigation.

Responsibilities
Configure, manage, and troubleshoot enterprise firewalls (Palo Alto, FortiGate, Checkpoint) across data canters, disaster recovery sites, and branch locations.
Administer perimeter defences, VPN gateways, and internal segmentation firewalls to ensure secure access and traffic isolation.
Deploy and maintain advanced security features including IPS/IDS, URL filtering, vulnerability protection, Wildfire, and DLP.
Handle L3-level configuration and support for F5 BIG-IP load balancers, enabling high availability,



traffic steering, WAF, and SSL offloading.
Design and maintain redundant, fault-tolerant infrastructure across multi-DC settings.
Lead incident response and problem resolution for network and security events.
Conduct periodic security assessments and implement remediation plans for identified vulnerabilities.
Drive upgrades and improvements to network and security architecture.
Ensure adherence to regulatory standards such as RBI, ISO 27001, and PCI-DSS.
Mentor junior engineers and provide escalation support to L2/L3 teams.

Required Skills & Expertise
Proficiency in:
Palo Alto (Panorama, Wildfire, Threat Prevention)
Fortinet FortiGate (VPN, HA, policy management)
VXLAN spine-leaf architecture
VPN protocols (IPSec, SSL VPN, Remote Access)
Routing & Switching fundamentals (especially BGP)

Solid understanding of:
Firewall and load balancer technologies
TCP packet capture an

📌 Network Security Engineer Mumbai
🏢 NTT Data
📍 Mumbai