Guillaume Tonnelier

Guillaume Tonnelier is an experienced IT professional specializing in systems and network administration, with a strong background in network security and user support. Currently serving as an Administrateur systèmes et réseaux at ACORIS Mutuelles, responsibilities include implementing, administrating, and supervising system infrastructures, as well as maintaining various operating systems and installed software. Previous experience at Saint-Gobain involved network maintenance, installation, and firewall management as a consultant, while roles at Harmonie Mutuelle spanned user assistance and technical support. Early career experience includes systems and network technician roles at SNCF Réseau and a web developer position at SNCF. Guillaume holds a professional license in Networks and Telecommunications and a BTS in digital systems with a focus on computing and networks.