Technical Solution Expert

About us Join us at Orange Business!We are a network and digital integrator that understands the entire value chain of the digital world, freeing our customers to focus on the strategic initiatives that shape their business.Every day, you will collaborate with a team dedicated to providing consistent, sustainable global solutions, no matter where our customers operate. With over 30,000 employees across Asia, the Americas, Africa, and Europe, we offer a dynamic environment to develop and perfect your skills in a field filled with exciting challenges and opportunities. About the role We are looking for an experienced Network & Security Engineer to provide advanced technical support and administration for enterprise **Data Centre, Network and Security infrastructure**. The role will be responsible for L3 troubleshooting, complex incident resolution, root cause analysis, network/security implementation, infrastructure upgrades, change management, technical documentation, OEM coordination and mentoring of L1/L2 engineers. The candidate should have strong hands-on experience in **Cisco Nexus Data Centre switching, routing, load balancing, firewalls and enterprise network security** and should be capable of independently handling critical production issues in a 24×7 Data Centre environment. * Provide **L3 technical support** for enterprise Network and Security infrastructure. * Troubleshoot and resolve complex network and security incidents. * Act as the technical escalation point for L1/L2 teams. * Support critical production incidents and participate in major incident bridges. * Perform detailed troubleshooting using logs, packet captures, device statistics and configuration analysis. * Ensure timely restoration of services while maintaining proper change and security procedures. 2. Cisco Data Centre Networking Strong hands-on experience with **Cisco Nexus switches**, including: * Cisco Nexus 9000 series * Layer 2 and Layer 3 configuration * VLAN, trunking and EtherChannel * STP/RSTP * vPC and vPC peer-link * HSRP * Inter-VLAN routing * OSPF and BGP * VRF * VXLAN/EVPN concepts * NDFC administration and troubleshooting * Interface, port-channel and transceiver troubleshooting * Nexus upgrade and migration activities Responsibilities include: * Troubleshooting complex Nexus L2/L3 issues. * Troubleshooting vPC, peer-link and keepalive-related issues. * Troubleshooting routing and forwarding problems. * Supporting Data Centre fabric implementation and expansion. * Performing configuration reviews and optimization. * Supporting Nexus/NDFC upgrades and migration activities. 3. Routing & WAN * Advanced troubleshooting of enterprise routing environments. * Troubleshoot routing adjacency and route propagation issues. * Troubleshoot inter-Data Centre connectivity. * Support DR connectivity and network failover activities. 4. Load Balancer Administration Hands-on experience with…