Network Engineer, Specialist

Sr. Network Operations Center (NOC) Engineer - (Tier
3)

Position Summary

The Senior-Level NOC Engineer (Tier
3) functions as the highest technical escalation point within the global Network Operations Center. This role provides advanced troubleshooting, architecture-level insight, and deep subject matter expertise across complex, multi-vendor network infrastructures. Tier 3 support engineers lead root-cause analysis, oversee major incidents, influence network design standards, and partner with engineering teams to drive stability, scalability, and operational excellence.

Key Responsibilities

Advanced Incident & Problem Management

* Acts as the final escalation point for all high-severity incidents, providing advanced packet analysis, protocol decoding, and cross-platform correlation.

* Performs deep-dive RCA, producing engineering-quality post-incident documentation and recommending long-term corrective actions.

* Leads network recovery efforts during outages involving routing instability, security events, hardware failures, or cloud connectivity issues.

Architecture-Level Network Expertise

* Expert proficiency with Cisco IOS, Nexus OS, ACI, and Juniper Junos, with the ability to interpret and troubleshoot complex multi-tier architectures.

* Designs and validates routing topologies, including large-scale enterprise BGP and OSPF deployments, multi-homing, route reflectors, graceful restart, fast reroute, and policy-based routing.

* Deep understanding of F5 LTM/GTM, load-balancing behaviors, DNS architectures, and SSL offloading.

Security, Cloud, & Advanced Platforms

* Expert-level support for Cisco ASA, Palo Alto NGFW, IPSec architecture, segmentation policies, and security posture validation.

* Advanced experience with AWS Direct Connect, cloud routing, hybrid architectures, and troubleshooting cloud edge connectivity.

* Leads analysis of Wi-Fi performance across Aruba WLANs, RF tuning, interference mitigation, and controller-based troubleshooting.

Tools, Automation & Visibility

* Mastery of packet analysis tools:
Solarwinds, APCON, Wireshark, netflow/sflow platforms.

* Develops automation scripts for configuration validation, monitoring, and incident response workflows.

* Evaluates and integrates new operational tools and observability platforms.

Cross-Functional Leadership

* Partners with Network Engineering to validate new designs, perform pre-deployment testing, and influence standards.

* Mentors junior and mid-level NOC engineers, providing technical coaching, lab guidance, and training material.

* Engages directly with vendors for escalated TAC cases, hardware escalations, and architectural reviews.

Qualifications and Skills

* Minimum 5 years of experience in network administration, including advanced troubleshooting, network design, and implementation.

* Bachelor's degree (B.E./B.Tech in Computer Science, IT, Electronics & Communication) or MCA, or equivalent practical experience.

CCNA, CCNP, or CCDP certifications preferred.

* Extensive enterprise network operations and engineering experience, supporting large-scale, complex environments, with exposure to Tier 3 escalations and high-availability architectures.

* Expertise in routing, switching, and WAN technologies, including:

* Advanced BGP, OSPF, and VRF design and operations

* MPLS fundamentals, L2/L3 architectures, and enterprise WAN solutions

* Load balancing and resilient network design

* Strong network security expertise, including:

* Firewalls, VPNs, IDS/IPS

* Hands-on experience with security-centric platforms and policy-driven architectures

* Cloud networking experience across AWS, Microsoft Azure, and Google Cloud Platform, including hybrid connectivity and cloud-integrated network designs.

* Proficiency in troubleshooting and diagnostics, including:

* PCAP analysis, deep packet inspection, and root-cause analysis

* Advanced troubleshooting across routing, switching, security, and cloud networks

* Hands-on experience with leading networking and security platforms, including:

* Cisco, Juniper, Brocade, Aruba, Palo Alto, and F5 ecosystems

* Proficiency with network monitoring and operations tools, such as:

* Solar Winds, Wireshark, and enterprise Operations Monitoring platforms

* Automation and scripting capabilities using Python and Power Shell to improve network efficiency, reliability, and operational scale.

* ITSM and workflow tool experience, including Service Now and Jira, supporting incident, problem, change, and escalation management.

* Strong operational leadership skills, including the ability to:

* Lead and coordinate major incidents under pressure

* Provide clear, effective communication during outages and escalations

* Drive resolution across cross-functional technical teams

* Participation in 24x7 Tier 3 escalation rotation, including support for after-hours change execution and major network event coverage as required.

* Excellent problem-solving, communication, and collaboration skills, with proven ability to manage complex network issues, escalations, and operational…