Lead Engineer Network

CBTS; Chennai District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

CBTS is seeking an experienced network engineering professional to lead enterprise network design, configuration, and optimization across routing, switching, WAN/LAN, SD-WAN and security components. You will drive high availability, performance and secure connectivity for customer and internal environments.

The role emphasizes advanced troubleshooting, upgrades, capacity planning and end-to-end observability with strong documentation and governance.

Responsibilities

• Leads design, configuration, deployment and optimization of network infrastructure, routing policies and segmentation.
• Performs advanced troubleshooting, problem management, RCA, performance optimization and escalations handling.
• Supports network upgrades, migrations, patching, software upgrades, capacity management and resilience improvements.
• Implements network security controls, ACLs, firewall policies, zero trust segmentation and access governance.
• Ensures end-to-end network observability, monitoring integration and proactive detection of performance degradation.
• Creates and maintains network architecture documentation, operational runbooks and engineering standards.
• Provides technical SME support for new solutions / presales sizing and infra transformation initiatives.
• Manages order entries for circuit designs, documentation, perform network equipment investigations, order management for circuits.

Skills

Enterprise network engineering

Routing & Switching

SD-WAN

Network security controls

Troubleshooting

Tools

Cisco IOS

Juniper Junos

Job description

1. Role Purpose

Leads enterprise network engineering & advanced operational support across routing, switching, circuits, WAN, LAN, wireless, SD-WAN and network security components to ensure high availability, optimized performance and secure network connectivity across customer and internal environments.

2. Key Responsibilities

• Leads design, configuration, deployment and optimization of network infrastructure, routing policies and segmentation.
• Performs advanced troubleshooting, problem management, RCA, performance optimization and escalations handling.
• Supports network upgrades, migrations, patching, software upgrades, capacity management and resilience improvements.
• Implements network security controls, ACLs, firewall policies, zero trust segmentation and access governance.
• Ensures end-to-end network observability, monitoring integration and proactive detection of performance degradation.
• Creates and maintains network architecture documentation, operational runbooks and engineering standards.
• Provides technical SME support for new solutions / presales sizing and infra transformation initiatives.
• Manages order entries for circuit designs, documentation, perform network equipment investigations, order management for circuits.

3. Key Performance Indicators (KPIs)

• Network availability and performance SLA adherence
• MTTR & incident resolution effectiveness
• Network change success rate
• Network optimization gain metrics (latency, throughput, packet loss reduction)
• Control / policy compliance and standardization adoption
• Reduction in repeat network