Frédéric Chazal is Research Director at Inria Saclay - Ile-de-France and Director of the DATAIA Paris-Saclay Institute. After a doctorate in pure mathematics, he focused his research on computational geometry and topology. Today, he heads the DataShape team (Inria Saclay - Ile-de-France) working on topological data analysis (TDA), a recent and fast-growing field at the crossroads of mathematics, statistics, machine learning and computer science. Frédéric's contributions to this field range from fundamental mathematical aspects to algorithmic and applied problems. He has published over 80 papers for major computer science conferences and mathematics journals. He is co-author of 2 reference books and 3 patents. He is also associate editor of 4 international journals: Discrete and Computational Geometry (Springer), SIAM Journal on Imaging Science, Graphical Models (Elsevier), Journal of Applied and Computational Topology (Springer). In recent years, Frédéric has led several national and international research projects on geometric and topological methods in statistics and machine learning. He is also the scientific leader of joint industrial research projects between Inria and several companies such as Fujitsu (TDA, machine learning and explainable AI) and the French SME Sysnav.