Julien Mozziconacci is a professor at the National Museum of Natural History in Paris. He was trained as a theoretical physicist and received his PhD in Physics on the mutli-scale architecture of chromosomes. He has been working since then on modeling chromosome structure, from nucleosomes to whole nuclei, by integrating various experimental approaches. His main current interests are the role of DNA repeats in genome function and evolution, and the application of deep learning to DNA sequences.