Senior Specialist

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 MPLS L3VPN / L2VPN (VPLS, 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. Train and mentor Tier-1 and Tier-2 NOC engineers. Maintain accurate system diagrams and configuration archives. Required Skills & Experience Networking & MPLS Expertise Strong hands-on experience with MPLS, MPLS-TE, RSVP-TE MPLS L3VPN / L2VPN / VPLS / EVPN Solid understanding of BGP, OSPF, IS-IS, route policies, and traffic engineering. Experience with QoS, multicast, redundancy protocols (VRRP/HSRP), and LAG/LACP. Multi-Vendor Platform Knowledge Nokia 7750 SR / SR-OS Cisco NCS540, ASR9000 (IOS-XR) Juniper MX, QFX, SRX Fortinet FortiGate, Checkpoint firewalls CGNAT platforms across Nokia, Juniper, and Cisco Security Knowledge Firewall rule management, NAT, IPS/IDS 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.