Lead Network Engineer

Lead Engineer – Networks (IT Infrastructure)

Location: Chennai (Work from Office)

Shift Timing: 9:30 AM – 6:30 PM IST

Role Overview

We are seeking an experienced Lead Engineer – Networks with strong expertise in enterprise-class networking, security, and IT infrastructure operations. The role involves managing, implementing, and supporting large-scale network environments, including Global WANs, Data Centers, Cloud Networking, and Security Infrastructure. The ideal candidate will be a subject matter expert (SME) in multiple networking technologies, capable of driving high availability, scalability, and security across a global IT environment.

Key Responsibilities

Provide production and technical support for networking services in a large-scale enterprise environment (30,000+ employees, 100+ global sites).

Manage and support Data Center and LAN/WAN infrastructures, including Spine-Leaf topology deployments.

Act as SME for WAN, LAN, Data Center, VPN, and Client Connectivity services.

Implement, manage, and troubleshoot Enterprise-class Data Centers and Global WAN infrastructures using technologies such as MPLS, ATT Anira/AVPN, IP-Sec VPN, IZO, etc.

Configure, manage, and troubleshoot Meraki, Arista, Aruba, and Cisco switches and HPE Aruba Wireless Infrastructure (mandatory).

Manage Layer 7 Firewalls (Palo Alto, Checkpoint), FortiGate Firewalls, and SSL VPN platforms (Ivanti / Pulse Secure).

Strong hands-on experience with Zscaler (ZIA & ZPA) in large environments.

Support WAN-Optimizers, Packet Shapers, and Load Balancers (F5 LTM, GTM, APM, AFM).

Work on Cisco Nexus (7k, 9k), Cisco 6500s, Cisco ASR/ISR routers, Cisco WAAS, Meraki, and Cisco ACS.

Utilize SolarWinds and other monitoring/diagnostic tools for proactive network management.

Capture, analyze, and interpret network traffic (packet captures) for troubleshooting.

Prepare and maintain high-quality network documentation (Visio).

Participate in new technology initiatives, Proof-of-Concepts, and service development.

Support and manage Cloud Networking (AWS, Azure: VNET, VPN Gateways, VWAN, ExpressRoute, Direct Connect, Subnets, etc.).

Collaborate across geographies and time zones, ensuring reliable global network performance.

Contribute to IPAM implementation and management (added advantage).

Required Skills & Experience

6–8 years of experience in Networking Services, Production, and Technical Support.

Proven expertise in Enterprise-scale Network Infrastructure and Global WAN Management.

Strong understanding of Networking & Network Security Technologies.

Hands-on with Meraki, Arista, Aruba, Cisco networking, and HPE Aruba Wireless (mandatory).

Strong firewall expertise: Palo Alto, Checkpoint, FortiGate.

Proficiency in Zscaler (ZIA/ZPA) for large deployments.

Experience with WAN optimizers, load balancers (F5), and monitoring tools (SolarWinds mandatory).

Practical experience in SD-WAN implementation & troubleshooting, especially CATO Networks. (Knowledge of Versa, Fortinet, Aruba, Velocloud is an advantage.)

Cloud networking experience in AWS & Azure is mandatory.

Strong knowledge of ITIL processes and certifications in CCNA/CCNP (at least one domain).

Excellent communication (oral & written), documentation, and interpersonal skills.

Ability to work independently and collaboratively in a global, multi-time-zone environment.

Self-starter with strong learning agility and problem-solving mindset.

Education & Certifications

CCNA/CCNP certification (minimum one domain required).

ITIL certification (mandatory).

Additional cloud/network certifications preferred.