Browse current jobs

Senior Specialist

Infinite Computer Solutions · Noida

Apply on employer website

Collected role description

Role overview

Senior Specialist at Infinite Computer Solutions

The engineer will support IP/MPLS backbone networks, data center connectivity, firewalls, and CGNAT platforms across Nokia, Cisco, Juniper, Fortinet, and Checkpoint devices.

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.

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.
  • 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 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
  • VPN troubleshooting (IPSec, IKE, SSL)
  • CGNAT/LSN behavior, logging, and capacity issues
  • Operational Skill Set
  • Strong incident management capability
  • Familiarity with monitoring tools (NetFlow, SNMP, Telemetry)
  • Log analysis, packet capture tools (tcpdump, Wireshark)
  • Experience with ITIL-driven processes (Incident, Change, Problem)
  • Good documentation and communication skills
  • Bachelor’s in Engineering, Computer Science, or related field
  • CCNP/CCIE
  • JNCIP/JNCIE
  • Nokia NRS-II or SRA
  • Fortinet NSE4/7
  • Checkpoint CCSA/CCSE
  • Soft Skills
  • Strong analytical and problem-solving abilities
  • Calm under pressure, especially during outages
  • Excellent coordination skills for major incidents
  • Ability to guide and mentor junior team members
  • Strong ownership and accountability

Preferred qualifications and skills

  • Education & Certifications (Preferred)
  • Certifications preferred:

Employment details

  • Location: Noida

Additional role details

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