Stefan Trifunovic has extensive experience as a System Administrator, currently employed at enjoy.ing since March 2014. Responsibilities include managing connectivity through IPsec tunnels and VPNs, maintaining advanced AT/HP switches, and overseeing a corporate wireless network. Stefan has successfully planned and implemented various open-source and proprietary solutions across multiple locations in Serbia, Romania, and Switzerland, while supporting clients and development teams, upgrading system software and hardware, coordinating backups, and ensuring compliance with established upgrade parameters. Prior to this role, Stefan worked as a System Administrator and Helpdesk Support at Vip mobile d.o.o. Stefan holds a Bachelor's degree in Electrical Engineering and Computer Science from the School of Electrical Engineering and Computer Science Applied Studies and a Bachelor's degree in Information Technology from Singidunum University.