Sr Subject Matter Expert (Support&Ops)
India
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Job Description
Sr Subject Matter Expert (Support&Ops)
Chennai, Tamil Nadu

Job 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.

Key Responsibilities

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

Skill Requirements

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

Other Requirements

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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 226,300 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending December 2025 totaled $14.5 billion.
23 Benefits At HCLTech, we believe in empowering our employees with comprehensive benefits that support their professional growth and enhance their well-being. When you sign up for a career with us, you gain access to: https://rmkcdn.successfactors.com/147eb21f/a701dca9-f32d-4fc9-9447-6.svg Industry-benchmarked compensation https://rmkcdn.successfactors.com/147eb21f/b0c54381-ddcc-4a33-9b35-9.svg Best-in-class healthcare benefits https://rmkcdn.successfactors.com/147eb21f/b73027be-7aae-4d36-a090-4.svg Personal time off https://rmkcdn.successfactors.com/147eb21f/d5b4fdfd-2e99-4e26-9878-9.svg Maternity and paternity benefits https://rmkcdn.successfactors.com/147eb21f/3d42b0fc-4652-435a-9ece-c.svg Access to skills / higher education programs/resources https://rmkcdn.successfactors.com/147eb21f/aeddeaf2-9e25-4584-ad11-d.svg Discounts on products and services via Benefit Box https://rmkcdn.successfactors.com/147eb21f/a9609a3b-2700-4b3c-9d90-a.svg Participate in CSR programs and live life with a purpose https://rmkcdn.successfactors.com/147eb21f/c6e33851-710f-4634-bd69-f.svg Opportunities to grow and advance your career Note: The benefits listed above vary depending on the nature of your employment and the country where you work. Some benefits may be available in some countries but not in all.