Senior Network Security Engineer Contract Pan India

Role: Network Security engineer Location: Pan India Contract Job Requirements* The Network Engineer will be responsible for operational support, maintenance, optimization, and enhancement of Viva Energy & enterprise network infrastructure across corporate offices, refinery operations, terminals, and retail site connectivity environments. The role will support business-critical network services including LAN, WAN, SD-WAN, wireless, firewall, network security, internet connectivity, cloud networking, and remote site communications. The engineer will work closely with infrastructure leads, security teams, cloud engineers, offshore support teams, and service providers to ensure a secure, reliable, and high-performing network environment. Key Responsibilities* Network Operations and Support Provide L2/L3 support for enterprise network infrastructure across corporate, refinery, terminal, and retail environments. Monitor network performance, availability, utilization, capacity, and service health. Troubleshoot network incidents, perform root cause analysis, and support permanent fix implementation. Support incident, problem, change, request, and major incident management processes. Maintain operational documentation, network diagrams, configuration records, standard operating procedures, and knowledge articles. LAN, WAN and Branch Connectivity Support enterprise LAN and WAN environments including routing, switching, VLANs, IP addressing, DNS, DHCP, and segmentation. Support business fibre, carrier connectivity, internet circuits, and branch network services. Coordinate with telecommunications providers for circuit provisioning, outage management, and performance troubleshooting. Participate in network upgrades, hardware refresh, migration, and site deployment activities. SD-WAN and Wireless Administer and support Cisco Meraki SD-WAN environments including MX, MS, and MR platforms. Monitor, troubleshoot, and optimize branch connectivity, wireless performance, and application access experience. Support wireless infrastructure, access point deployments, coverage reviews, and branch network readiness activities. Assist with network performance tuning, capacity planning, standardization, and continuous improvement. Network Security and Firewall Support Support Fortinet / FortiGate firewall environments including rule changes, policy reviews, and security remediation actions. Support Cisco Identity Services Engine (ISE), network access control, segmentation, and secure access requirements. Assist with firewall, VPN, remote access, proxy, and network security troubleshooting. Support compliance with operational, security, and change governance processes. .