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John Castillo is an experienced IT professional with a strong background in system administration and IT support. Currently serving as the Head of IT and IT Support Specialist at Corva since September 2021, John has previously held positions including System Administrator at ROSEN, where responsibilities encompassed the installation and configuration of software and hardware for ILI servers, managing virtual machines, and ensuring system performance and security. Prior experience as an Infrastructure Technician Level 2 at ExxonMobil involved comprehensive maintenance of network infrastructure and troubleshooting various network components. John Castillo's expertise spans across diverse IT environments, focusing on system management, performance monitoring, and security measures.