Thomas Vuillaume is leading Work Package 3. He is based at LAPP-CNRS (Annecy, France) as a data scientist, developing data analysis pipelines and deep learning to retrieve physical information from the images observed by the Cherenkov Telescope Array Observatory (CTAO). He is also very involved in Open Science, helping researchers and software engineers to make their work more reproducible and reusable: he is the technical lead for the ESCAPE Open-source Software and Service Repository (OSSR) and chair of the ESCAPE summer school series.