Romain Lerallut is VP Engineering at Criteo and head of the Criteo AI Lab, in charge of developing the uses of AI in digital advertising and commerce. Before the launch of the lab in 2018, he was a director in the engineering department, responsible for the development of large-scale machine learning algorithms applied to problems such as product recommendation or banner graphic optimization. Prior to joining Criteo, he taught computers to read handwriting at A2iA.