Reliable and hardworking system/network administrator with tons of experience over my shoulders. Providing technical expertise for IT network building, implementation, optimization and upgrade Monitoring the network environment including Cisco managed switches and wireless controller routers, switches, firewalls, software applications Installation, configuration and maintenance of system network components (CentOS, AltLinux, FreeBSD, Windows Server 2012) Performing troubleshooting and diagnosis to hardware/software network failures, and providing solutions.