Manage and monitor(MRTG) all Networks in installed systems and infrastructure. Configuring and troubleshooting firewalls. (Cyberoam, SonicWall, Sophos, Fortinet). Involved in Configuration & Troubleshooting of Cisco Routers & Switches, I was handling all network security issues like Blocking Outside users to access inside the network, to block inside users to access the specific website from the internet, etc. Firewall configuration, implementation Lead for 20 Sites. Involved in deploying /implementing security infrastructure on world top cruise ships at on-site locations Involved in network migration based on new design and take ownership to fix the after issues. Troubleshoot Post-implementation issues Install, configure, test and maintain operating systems(Linux, Thin client, and Windows), application software like Easysol, TP Pos and system management tools. Working in a highly dynamic TAC (Technical Assistance Center) environment with a High focus on customer satisfaction. Able to determine problems and deliver Remarkable Customer Experience. Proactively ensure the highest levels of systems and infrastructure availability. Monitor and test application performance for potential bottlenecks, identify possible solutions and work with developers to implement those fixes. Maintain security, backup, and redundancy strategies. Write and maintain custom scripts to increase system efficiency and lower the human intervention time on any tasks. Provide 2nd and 3rd level support. Liaise with vendors and other IT personnel for problem resolution.