UDHAYAKUMAR G
Chennai
Summary
Seasoned network engineer with proven expertise at Sify Technologies Limited, specializing in advanced routing protocols and network security. Adept at troubleshooting complex issues and implementing robust solutions, enhancing operational efficiency. Skilled in project management and problem-solving, with a strong focus on delivering secure, reliable connectivity through innovative SD-WAN technologies.
Overview
3
3
years of professional experience
1
1
Certification
Work History
Engineer Network Projects
Sify Technologies Limited
Chennai
10.2024 - Current
Configured and maintained enterprise network infrastructure, including routers, switches, firewalls, and SD-WAN devices.
- Executed regular health checks, firmware upgrades, and patch management on network equipment.
- Resolved operational issues with Cisco, Versa, HP, Aruba, FatPipe, and Fortinet devices within LAN/WAN frameworks.
- Provided Level 2 support for network incidents, ensuring timely resolutions and minimal downtime.
- Documented network changes, configurations, and procedures to facilitate knowledge sharing and compliance.
- Configured and troubleshot MPLS Layer 2 (VPWS/VPLS) and Layer 3 VPNs for enterprise connectivity.
- Applied redundancy protocols such as VRRP, HSRP, and iBGP to enhance network reliability; also implemented IPsec, VPN tunnels, and GET VPN (GDOI).
- Demonstrated expertise in routing protocols including Static, BGP, OSPF, and IS-IS.
- Designed and implemented technical solutions for client requirements.
Engineer Trainee
Sify Technolgies Ltd
Chennai
07.2023 - 10.2024
- Managed complex enterprise network infrastructures utilizing BGP, OSPF, MPLS, VRRP/HSRP, and SD-WAN technologies.
- Conducted in-depth analysis of routing issues, restoring services within SLA parameters.
- Configured routing policies including route-maps and advanced ACLs tailored to customer needs.
- Handled L1 escalations for critical incidents, executing RCA and corrective action plans.
- Implemented and optimized VPN technologies to ensure secure connectivity for users.
- Monitored network performance proactively using NMS tools and packet captures.
- Executed configuration migrations and hardware upgrades, ensuring zero downtime during changes.
- Coordinated with OEM/ISP teams for WAN link troubleshooting and last-mile connectivity.
Education
B.Tech - Information Technology
Sri Sairam Institute of Technology
Chennai2023
HSE
New Prince Matriculation Higher Secondary School
Chennai2019
SSLC
New Prince Matriculation Higher Secondary School
Chennai2017
Skills
- Network troubleshooting
- VLAN, LACP, STP
- Layer 2/3 MPLS,VPLS
- Routing protocols: static, BGP, OSPF, IS-IS
- Redundancy Protocols: VRRP, HSRP
- VPN technologies: IPSec VPN, SSL VPN
- Network security: ACLs, route-maps, firewall policies
- Firmware upgrades
- Problem solving
- Project management
- SD-WAN: Cisco, Fortigate, Versa, Aruba
- Mellanox switches
- Cisco ACI
- Root-cause analysis
- Spine-leaf architecture
- Nexus switches (9k series)
- Array load balancer
- VXLAN
- Juniper routers and switches, SRX firewall
- Dell switches
Onsite Project Experiences
L2 Network Engineer – STAR Health and Insurance | Chennai
Worked on multi-vendor network infrastructure, including Cisco, HP, and Fortigate firewalls. Conducted testing and validation for Fortigate SD-WAN to ensure optimized performance and secure connectivity. Monitored WAN links and managed network operations to maintain high availability and reliability. Delivered proactive troubleshooting and performance tuning to minimize downtime.
Key Contributions:
- Implemented firewall policies and optimized routing for secure data flow.
- Performed SD-WAN link failover testing and bandwidth utilization analysis.
- Coordinated with cross-functional teams for network upgrades and patch management.
Technologies Used: Cisco IOS, HP Networking, Fortigate Firewall, Fortigate SD-WAN, MPLS, BGP, OSPF, VPN, IPsec
L2 Network Engineer – NPCI (National Payments Corporation of India) | Hyderabad
Worked on multi-vendor network infrastructure including Juniper, Cisco ACI ,Mellanox switches, Nexus 9k switches,Dell switches, Fortigate SD-WAN and Array Load Balancer .Managed migration of underlay traffic to overlay architecture, improving scalability and resilience. Provided advanced troubleshooting for network-related issues and ensured uptime for critical payment services.
Key Contributions:
- Configured and monitored NMS tool (BMC) for proactive fault and performance management.
- Implemented security best practices and firmware upgrades across network devices.
- Delivered seamless migration with zero impact on production traffic.
Technologies Used: Juniper, Cisco ACI , Mellanox switches,Nexus(9k series), Dell Switches, Fortigate SD-WAN, Array Load Balancer, MPLS, BGP, OSPF, VPN, IPsec, BMC NMS
Certification
Cisco Certified Network Associate (CCNA), 2023-05-13
Languages
- English
- Tamil
Timeline
Engineer Network Projects
Sify Technologies Limited
10.2024 - Current
Engineer Trainee
Sify Technolgies Ltd
07.2023 - 10.2024
B.Tech - Information Technology
Sri Sairam Institute of Technology
HSE
New Prince Matriculation Higher Secondary School
SSLC
New Prince Matriculation Higher Secondary School