Esteban Landerreche is a seasoned professional in cryptography and data analysis. Currently serving as a Cryptographer at Roseman Labs since June 2022, prior experience includes the role of Associate Cryptographer at Centrum Wiskunde & Informatica from December 2017 to November 2020 and a Master Thesis Researcher/Trainee position in the same institution in 2017. Esteban's research was co-supervised by Marc Stevens and Christian Schaffner within the Cryptology Research Group. Earlier career experiences include a Marketing-CRM Analyst position at Linio México, focusing on data analysis and project management in email marketing, and serving as Director at Laberintos e Infinitos. Academic credentials include a Master’s Degree in Logic from the University of Amsterdam and a Bachelor of Science in Applied Mathematics from the Instituto Tecnológico Autónomo de México.