Raul Herranz Sainz-Ezkerra has extensive experience in PKI administration and system technical support. Since October 2019, Raul has been with S21sec, focusing on digital transformation through PKI infrastructure management, privileged account administration with Cyberark, and digital signatures with TrustedX, primarily for the client Repsol. Concurrently, since July 2016, Raul has been managing PKI for Repsol, also utilizing TrustedX and Cyberark. Additionally, since January 2011, Raul has served as a systems technician at Tecnocom, specializing in Wintel systems and PKI administration.