Vishnu Mohan

About Vishnu Mohan

Network Engineer with robust experience in network design, escalation support, network administration, and systems administration. Skilled in delivering technical support, managing network operations, and maintaining enterprise-wide area networks across multi-platform and high uptime Data Center environments.An exemplary team player as well an individual task taker with robust interpersonal skills. Ability to organize and manage multiple priorities; work in fast-paced environment.

Experience

1. Senior Network and Security Engineer

   Lantheus

   Apr 2025 — Present · MA, US

   o Deployed active/standby modes of high availability (HA) with session and configuration synchronization on multiple Palo Alto firewall pairs. Knowledge on the application of active/active HA mode.o Designed and implemented network infrastructure for a new site, including routing, switching, and wireless configuration, aligned with the project\'s technical design documentationo Implemented security measures to resolve data loss vulnerabilities, mitigate risk and recommended security changes or system components as needed.o Implemented the Global protect VPN, IPSEC VPNs and SSL VPNs through IKE and PKI on palo alto firewalls for site-to-site connectivity.o Deployed and configured Cisco ISE servers, integrating network devices with TACACS+ for administrative access control and access points with RADIUS for secure network authentication.o Created detailed network diagrams and design documentation using Microsoft Visio to support infrastructure planning and implementation.o Performed site surveys and heatmap analysis to optimize wireless coverage and eliminate dead zones in high-density environments.o Deployed and configured Cisco Meraki wireless access points across multiple locations, ensuring secure and scalable Wi-Fi connectivityo Troubleshoot LAN/ WAN infrastructure includes routing and switching protocols like OSPF, BGP, EIGRP, HSRP, STP, LACP/PAGP.o Implemented GRE tunnels in Zscaler between the Zscaler connectors to Zscaler cloud. Also provided technical support to end users regarding Zscaler connectivity issues.o Configured and implemented enhanced VPC and built a bridge between 5k and 9k series switches for the data center operations.o Executed end-to-end data center network migration, including reconfiguration of switches, routers, and firewalls, ensuring seamless transition with minimal downtime

Education

• Anna University Chennai

  Bachelor's degree, Electrical, Electronics and Communications Engineering