SAMEER AHMED MV
Chennai
Summary
Network Security Engineer with over 7 years of comprehensive experience in Cisco Routing, Switching, Network Security, and Cloud Operations. Proven expertise in managing and troubleshooting complex network environments using technologies such as VMware NSX-T, Zscalar, WAF, Cisco ISE, FortiGate Firewalls, Cisco ACI, F5 Load Balancers, SD-WAN, Cisco Nexus and Catalyst switches, and Wireless LAN Controllers. Adept at handling high-priority incidents, customer escalations, and migration projects with a strong focus on network performance, security, and uptime. I am skilled in implementing and managing protocols like OSPF, EIGRP, BGP, NAT, PAT, VPN (IKEv1/IKEv2), VLAN, VTP, and ACLs. Committed to continuous learning and delivering innovative network solutions aligned with business objectives.
Overview
7
7
years of professional experience
Work History
Lead - Cloud Operations
Novamesh Limited/ Tata Communications Limited
07.2022 - Current
- Lead the design and deployment of Data Center and Cloud network architectures leveraging Cisco ACI (LeafSpine / EVPN-VXLAN), VMware NSX-T (overlay/underlay), Cisco Nexus 9K/5K, SD-WAN, and hybrid WAN connectivity.
- Optimize routing and data flows using BGP, OSPF, EIGRP, MPLS, and enforce network segmentation and QoS to deliver secure, scalable, and high-performance multi-site communication.
- Administer FortiGate Firewalls, managing security policies, NAT/PAT, IPS/IDS, SSL/IPsec VPN, and implementing zero-trust aligned access controls across datacenter and branch networks.
- Manage F5 LTM load balancers including SSL offloading, health monitors, pool/virtual server management, failover & HA design for high-availability application delivery.
- Lead migration and transformation projects, including: Legacy L2/L3 → Cisco ACI EVPN-VXLAN fabric modernization, FortiGate → VMware NSX-T Distributed Firewall security re-architecture.
- Perform capacity planning, performance tuning, and data-path analysis for latency-sensitive enterprise workloads.
- Enhance network visibility and reliability using SolarWinds, Wireshark, flow telemetry, and automated alerting frameworks.
- Conduct network security governance, configuration audits, and compliance risk remediation in alignment with enterprise standards.
- Lead P1/P2 escalation response and Root Cause Analysis (RCA) ensuring service continuity and stakeholder communication.
- Partner with automation teams to deploy Ansible/Python-based configuration workflows, improving operational consistency and reducing manual change risks.
- Collaborate with Cloud, Application, and Infrastructure teams to deliver integrated network solutions supporting business growth.
- Recognized for customer excellence and operational leadership, awarded Employee of the Year for outstanding service delivery.
Network Security Engineer
ATOS
08.2018 - 02.2022
- Configured and maintained Cisco Catalyst LAN/WAN networks including VLAN, STP, Inter-VLAN routing, trunking, port security, and upstream routing.
- Troubleshot and optimized enterprise routing using OSPF and EIGRP, along with WAN connectivity and VPN services.
- Configured and supported FortiGate Firewalls including NAT/PAT rulesets, IPsec VPN tunnels, SSL VPN access, and UTM threat protection features.
- Participated in MPLS WAN service provisioning and routing integration for distributed enterprise connectivity.
- Supported application delivery and availability enhancements using F5 LTM load balancing, including virtual server and pool configurations.
- Applied network QoS, ACLs, DHCP snooping, and AAA security controls to enforce traffic prioritization and authentication.
- Maintained accurate documentation, network diagrams, backup configurations, upgrade schedules, and change controls.
Education
B. Tech - Electrical and Electronics Engineering
Cochin University of Science and Technology
01.2018
Skills
- Network Troubleshooting & Incident Management
- VMware NSX-T
- Cisco ISE
- Zscalar
- WAF
- FortiGate Firewall
- Cisco Switches & Routers
- Cisco Nexus Switches
- F5 Load Balancer
- Cisco ACI
- SD-WAN
- Wireless LAN Controllers (WLC)
- Protocols & Networking Concepts
Personal Information
Title: Network Security Engineer
Timeline
Lead - Cloud Operations
Novamesh Limited/ Tata Communications Limited
07.2022 - Current
Network Security Engineer
ATOS
08.2018 - 02.2022
B. Tech - Electrical and Electronics Engineering
Cochin University of Science and Technology