Timothée Lacroix, aged 31, is Chief Technical Officer in charge of technical issues relating to product efficacy and research. A graduate of ENS rue d’Ulm in computer science and holder of a Master's degree in Mathematics Vision Learning from Paris Saclay, he began his career as an engineer at Facebook AI Research in 2015 in New York, where he completed his thesis between 2016 and 2019, in collaboration with École des Ponts, on tensor factorization for recommender systems. He continued his career at Meta, working with Guillaume Lample until 2023, when he co-founded Mistral AI.