System Administrator
CurrentInstalled, configured, and maintained CentOS and Ubuntu Linux servers and desktop systems. Customized open-source software and developed Bash shell scripts for data and MySQL database backups. Managed Linux servers for software development, data backups, etc. Installed and configured software applications for PHP, Java, Android, and iOS-based software development environments.Installed and configured Microsoft Windows operating systems and virtualization softwares.Managed VMware ESXi hosts, Citrix Xenserver, Windows Active directory services and WSUS server.Managed network security, including FortiGate firewall, Untangle firewall, WiFi routers, and internet circuits. Conducted maintenance on desktop computer hardwares, laptops, thin clients, printers, and scanners. Resolved issues with head office computer systems. Monitored systems, networks, and UPS systems. Provided technical support for work-from-home users. Assisted with documentation and implementation for ISO and ISMS standards. Procured IT hardware and software and managed the inventory system. Researched information technology solutions.