Chennai, Tamil Nadu
Job Summary

Role Summary
As a Tier 3 Network Data Engineer, you will serve as a senior escalation point for complex data network issues, lead root cause analysis, and drive optimization initiatives across large-scale enterprise and telecom infrastructures. You will collaborate with Tier 1/2 teams, engineering, and customer stakeholders to ensure high availability and performance of data services.
Key Responsibilities

- Lead advanced troubleshooting and resolution of escalated incidents across Ethernet, MPLS, SD-WAN, IP routing, and switching domains.
- Perform logical provisioning, configuration, and validation of transmission circuits and services.
- Drive root cause analysis and implement permanent fixes for recurring issues.
- Collaborate with Tier 1/2 teams and engineering to support network upgrades, migrations, and integration of new technologies.
- Maintain and optimize network performance, ensuring minimal downtime and SLA adherence.
- Document network topologies, configurations, and operational procedures.
- Participate in SA OPS reviews and provide performance insights and improvement plans.
- Mentor junior engineers and contribute to knowledge base development.
- Lead complex technical calls and drive them to resolution.

Required Skills

Deep expertise in:

- Routing & Switching: OSPF, BGP, EIGRP, MPLS, VLANs, STP
- Transmission Systems: DWDM, SDH, SONET, TDM
- Platforms: Cisco, Juniper, Alcatel/Nokia
- SD-WAN Technologies: Configuration, deployment,



and troubleshooting of SD-WAN solutions (e.g., Cisco Viptela, Fortinet, Versa, etc.)

Proficiency in network diagnostic tools (Wireshark, iPerf, SNMP)
Experience with network automation and scripting (Python, Ansible) is a plus
Solid analytical and communication skills
Certifications (Preferred)
CCNP/CCIE, JNCIP/JNCIE, MEF-CECP, or equivalent
Education
Bachelor’s or Master’s degree in Computer Science, Electronics, or related field

Key Responsibilities

Required Skills

Deep expertise in:

- Routing & Switching: OSPF, BGP, EIGRP, MPLS, VLANs, STP
- Transmission Systems: DWDM, SDH, SONET, TDM
- Platforms: Cisco, Juniper, Alcatel/Nokia
- SD-WAN Technologies: Configuration, deployment, and troubleshooting of SD-WAN solutions (e.g., Cisco Viptela, Fortinet, Versa, etc.)

Proficiency in network diagnostic tools (Wireshark, iPerf, SNMP)
Experience with network automation and scripting (Python, Ansible) is a plus
Strong analytical and communication skills
Certifications (Preferred)
CCNP/CCIE, JNCIP/JNCIE, MEF-CECP, or equivalent
Education
Bachelor’s or Master’s degree in Computer Science, Electronics, or related field

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📌 To Be Mapped (Chennai)
🏢 HCLTech
📍 Chennai