Job Summary
- The Tier-3 NOC/TAC IP/MPLS & Security Support Engineer provides advanced technical support for large-scale service provider or enterprise networks. This role focuses on resolving complex incidents escalated from Tier-1 and Tier-2 teams, ensuring network stability, performing in-depth troubleshooting, and coordinating with vendors for critical issues. The engineer will support IP/MPLS backbone networks, data center connectivity, firewalls, and CGNAT platforms across Nokia, Cisco, Juniper, Fortinet, and Checkpoint devices.
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- Key Responsibilities
Incident & Escalation Management
- Act as the highest operational escalation point for complex network and security incidents.
- Perform real-time troubleshooting on IP/MPLS backbone, core routers, and security appliances.
- Lead Major Incident (P1/P2) bridges and restore service in mínimal time.
- Work closely with Tier-1/2 NOC teams, providing guidance and technical support.

Troubleshooting & Analysis
- Diagnose advanced issues involving:
- MPLS, MPLS-TE, RSVP-TE:
- L3VPN, L2VPN (VPLS, VPWS, EVPN):
- Routing protocols: BGP,



OSPF, IS-IS
- Analyze packet captures, logs, and control-plane behavior.
- Troubleshoot performance, latency, flaps, routing loops, and service outages.

Firewall & CGNAT Support
- Resolve escalations for:
- Juniper SRX, Fortinet, Checkpoint firewalls:
- Nokia and Cisco CGNAT platforms
- Troubleshoot NAT, filtering policies, VPN issues, and security rule conflicts.
- Support customer-impacting security incidents.

Network Stability & Optimization
- Perform proactive audits and health checks on backbone infrastructure.
- Optimize routing policies, MPLS tunnels, and traffic engineering parameters.
- Recommend long-term fixes and preventive measures.

Vendor Coordination
- Collaborate with GTAC (Nokia), JTAC (Juniper), Cisco TAC, Fortinet, and Checkpoint support for unresolved issues.
- Track vendor cases, implement interim workarounds, and validate permanent fixes.

Change Management
- Rev

📌 Senior Specialist (Noida)
🏢 Infinite Computer Solutions
📍 Noida