Job Summary :

We are seeking an experienced Network Engineer L3 to design, implement, optimize, and support enterprise network and security infrastructure across complex multi-site environments. The ideal candidate will possess deep expertise in routing, switching, network security, SD-WAN, and network automation technologies, along with strong troubleshooting and stakeholder management capabilities.

This role will serve as a senior technical escalation point for network operations, infrastructure transformation initiatives, and complex network-related incidents while ensuring high availability, performance, scalability, and security of enterprise network services.

Key Responsibilities :

- Design, deploy, configure, and maintain enterprise network infrastructure including routers, switches, firewalls, VPNs, proxy solutions, load balancers, and network security platforms.

- Manage and optimize LAN, WAN, SD-WAN, wireless, and hybrid network environments to ensure high availability and performance.

- Monitor network performance, utilization, and capacity, proactively identifying bottlenecks and recommending improvements.

- Perform advanced troubleshooting and root cause analysis for complex network, security, and connectivity issues.

- Implement and maintain network security controls, including firewall policies, VPN connectivity, intrusion prevention systems, proxy solutions, and secure access technologies.

- Support network lifecycle management activities, including upgrades, migrations, patching, and technology refresh initiatives.

- Collaborate with security, cloud, infrastructure, and application teams to ensure seamless integration of enterprise services.

- Participate in network architecture reviews and contribute to infrastructure modernization and transformation programs.

- Create and maintain technical documentation, network diagrams, operational procedures, and knowledge repositories.

- Act as an escalation point for critical incidents and provide technical guidance to L1/L2 engineers.

Required Skills & Expertise :

- Strong hands-on experience in Enterprise Routing & Switching technologies.

- Expertise in LAN/WAN architecture, network segmentation, QoS, and traffic optimization.

- Experience with SD-WAN technologies and enterprise network transformation initiatives.

- Strong knowledge of Cisco technologies including Cisco DNA Center (DNAC) and Cisco Identity Services Engine (ISE).

- Experience with network security technologies including Firewalls, VPNs, IDS/IPS, Proxy Servers, and Secure Access solutions.

- Hands-on experience with F5 Load Balancers (LTM/GTM) and application delivery technologies.

- Experience with Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA), or similar cloud security platforms.

- Strong understanding of TCP/IP, BGP, OSPF, EIGRP, MPLS, VLANs, STP, DNS, DHCP, and Network Access Control.

- Excellent troubleshooting, performance tuning, and root cause analysis skills.

- Strong client-facing communication, stakeholder management, and technical documentation skills.