Sathiyanarayanan D

Senior Network Engineer with 4+ years of experience in enterprise network security, Fortinet Security Fabric, firewall administration, SD-WAN, VPN technologies, routing, switching, and infrastructure support. Experienced in managing multi-site enterprise networks across India and Mexico, implementing secure network solutions, and providing L2/L3 support. Fortinet NSE 4 certified with strong expertise in FortiGate Firewalls, FortiManager, FortiAnalyzer, FortiAuthenticator, and network troubleshooting

Senior Network Engineer - Rane Holding Limited - Rane Data Center in Perungudi, Chennai

(2022-09)

• Managed enterprise network infrastructure supporting 40+ branch locations across India and Mexico, ensuring high availability and secure connectivity
• Administered FortiGate Firewalls (60F/70F/100F/120F/200F/600F) including deployment, migration, troubleshooting, and policy management
• Designed, configured, and maintained IPsec VPN, SSL VPN, and Site-to-Site VPN connectivity between corporate offices, manufacturing plants, and remote users
• Implemented SD-WAN across multiple branches, improving application performance and providing automatic WAN failover
• Managed UTM security features including IPS, Antivirus, Web Filtering, DNS Filtering, Application Control, SSL Inspection, and Anti-Spam
• Configured VLANs, Inter-VLAN Routing, Static Routes, Policy Routes, NAT, DHCP, and DNS services
• Managed FortiSwitch and FortiAP deployments, including wireless security, VLAN assignment, SSID configuration, and centralized management
• Administered FortiManager, FortiAnalyzer, FortiAuthenticator and FortiClient EMS
• Configured Active-Active and Active-Passive High Availability (HA) clusters, minimizing service interruptions during planned and unplanned outages
• Executed firmware upgrades with minimal downtime following change management procedures and Performed firewall configuration backup, disaster recovery testing, and configuration restoration
• Provided Level 2 and Level 3 technical support for network, firewall, VPN, wireless, and WAN-related incidents
• Monitored network health, bandwidth utilization, security events, and system performance using enterprise monitoring tools like (PRTG, Site24/7 and Zabbix tool)
• Coordinated with ISPs for circuit installation, WAN troubleshooting, bandwidth upgrades, and outage resolution
• Managed user access, VPN authentication, MFA integration, and network access control
• Supported IT audits by preparing firewall documentation, network diagrams, asset inventories, and security reports

Network Trainee Engineer - CSS Corp - Ambattur, Chennai

(2022-04 - 2022-08)

Bachelor of Engineering (B.E.) - Electrical and Electronics Engineering (EEE) - E.G.S. Pillay Engineering College, Anna University (2021)

Diploma - Electrical and Electronics Engineering (EEE) - Vallivalam Desikar Polytechnic College, DOTE (2018)