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 strong 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 environments.
- 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