Johan Geertsma

Johan Geertsma is a seasoned professional in the field of security, currently serving as a Senior Security Officer at KPN CISO. They previously held the position of Security Manager at KPN Security from 2015 to 2023 and worked as a Technical Consultant at KPN from 2013 to 2015, specializing in Linux and Public Key Infrastructure. Johan's career traces back to PinkRoccade, where they developed foundational skills in ICT while earning a degree in Electronics. They have extensive experience managing secure environments for various clients, demonstrating expertise in systems administration and security practices.