Job Title: Tier-3 (T3) NOC/TAC IP/MPLS Security Support Engineer

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.

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 minimal 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
- Review and validate change requests (CRs) and methods of procedure (MOPs).
- Support scheduled maintenance on backbone routers, firewalls, or MPLS services.
- Participate in planned upgrades, migrations, and feature enablements. **Documentation Knowledge Sharing
- Create technical documents, RCA reports, and troubleshooting guides.

Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.

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