TECHNICAL LEAD - Data Network Security - Firewalls

Happiest Minds Technologies; Bengaluru; On-site; INR 1,500,000 - 3,000,000; Full time

Job summary

Happiest Minds Technologies in Bengaluru seeks an experienced Senior Network Engineer to manage routing and switching, troubleshoot complex LAN/WAN/MPLS issues, and lead network design initiatives. The role requires CCNP certification, hands-on IOS-XE/Nexus experience, and mentoring of junior staff.

The ideal candidate will drive high availability, optimize QoS, and collaborate with cross-functional teams to deliver robust enterprise connectivity and documentation.

Qualifications

• Must have extensive hands-on routing and switching experience.
• Experience across LAN/WAN/MPLS environments and data-center connectivity.
• Able to perform RCA and provide long-term fixes.

Responsibilities

• Provide L3 support for advanced network incidents, escalations, and major outages.
• Lead network design reviews, upgrades, and performance optimization.
• Mentor L1/L2 teams and ensure adherence to SLAs.

Skills

Routing protocols

LAN/WAN/MPLS

L3 Support

Team leadership

Mentoring

Troubleshooting

Documentation

Network design reviews

Education

CCNP Certified

Tools

Wireshark

tcpdump

Job description

Data Network - Routing & Switching,Cisco Routers,Cisco Switches,Juniper Switches,Aruba Switch,Aruba controllers,dell switches,CCNP Certified,L3 Support

• Excellent communication skills.
• Provide L3 support for advanced network incidents, escalations, and major outages.
• Strong hands-on expertise in routing protocols: BGP, OSPF, EIGRP, route filtering, and redistribution.
• Deep understanding of Layer 2 technologies including VLANs, STP/RSTP/MSTP, EtherChannel, Trunking, Port Security.
• Experience with enterprise switching platforms (Cisco Catalyst / Nexus or equivalent).
• Experience in end of support devices migrations.
• Troubleshoot complex network issues involving LAN, WAN, MPLS, and data center connectivity.
• Perform packet-level diagnosis using tools like Wireshark/tcpdump.
• Configure and optimize high?availability mechanisms such as HSRP, VRRP, GLBP.
• Solid understanding of QoS, multicast, IPv6, and network segmentation.
• Work closely with cross-functional teams to provide RCA and long term fixes.
• Participate in network design reviews, upgrades, and performance optimization.
• Create and maintain updated documentation for configurations, topologies, and best practices.
• Mentor L1/L2 teams and ensure adherence to operational processes and SLAs
• Team Leadership qualities