Vijaya Kumar

Senior Network Engineer with 10+ years of experience across enterprise and service-provider network environments, covering network operations, routing and switching, IP/MPLS, network implementation, service delivery, troubleshooting, technical design and customer-facing support. Strong experience with Cisco routing and switching, OSPF, EIGRP, BGP working knowledge, MPLS VPN, network fault isolation, incident management, service provisioning and SLA-driven restoration. Experienced in working with NOC, field engineering, planning, provisioning, operations and customer teams to resolve network incidents and deliver network implementations.

Currently developing hands-on Palo Alto NGFW skills through lab-based learning, with focus on PAN-OS, security zones, interfaces, security policies, NAT, routing, VPN and troubleshooting.

Senior Network Engineer at TATA COMMUNICATIONS AND TRANSFORMATION SERVICES (TCTS) (2020-10 – Present)

Client: Optus Telecom & NBN Australia. Designed end-to-end carrier and enterprise network solutions, producing detailed engineering designs covering network topology, nodes, equipment, ports, connectivity and service architecture.

• Worked with network planning, provisioning, build and operations teams to validate network connectivity, resource availability, capacity and implementation requirements.
• Designed and supported core transport and IP network solutions involving Cisco NCS equipment, IP equipment, router connectivity and LAG configurations.
• Supported Cisco NCS installation and commissioning activities, connectivity validation and technical design requirements.
• Collaborated with Planning, Provisioning, Build, Project Management and Operations teams to resolve network-related issues and maintain service delivery.
• Provided technical support for network design and implementation issues, coordinating with operational teams to identify and resolve connectivity and service-impacting problems.
• Conducted technical design reviews, supported engineering governance and contributed to process improvements and engineering best practices.
• Mentored junior engineers through technical guidance, design reviews and knowledge-sharing sessions.

Network Engineer – Enterprise & Service Provider Network Operations at SIFY TECHNOLOGIES LIMITED (2015-04 – 2020-09)

Delivered end-to-end network implementation, service provisioning and operational support for enterprise and service-provider Internet, fibre and MPLS services.

• Installed, configured and maintained Cisco Catalyst 2900, 3550 and 3560 switches, along with Cisco 1841/2811 routers and HP MSR platforms.
• Configured and supported Layer 3 routing protocols including OSPF and EIGRP, with working knowledge of BGP and MPLS VPN technologies.
• Performed network fault diagnosis, troubleshooting and service restoration to meet customer SLA and operational requirements.
• Managed network incidents and service provisioning through CRM and ticketing systems, coordinating with NOC, field engineers and customer stakeholders.
• Executed Cisco IOS software upgrades, configuration backups, preventive maintenance and network performance monitoring.
• Supported customer implementations, network migrations and infrastructure upgrades while following engineering and operational standards.
• Collaborated with field engineers, NOC teams and customer stakeholders to troubleshoot complex network issues and maintain service availability.
• Supported network service delivery across enterprise and service-provider environments, including Internet and MPLS connectivity.

Bachelor of Technology (B.Tech) in Electronics & Communication Engineering – Perunthalaivar Kamarajar Institute of Engineering and Technology, Pondicherry University (2009 – 2013)