Laurent Ach is CTO of Qwant since 2022, the French company creating a web search engine that respects data privacy. He is an expert in machine learning and passionate about human-centered artificial intelligence. He previously created and led the European team of Rakuten Institute of Technology that contributed to many innovations in the fields of machine learning, deep learning, computer vision and natural language processing, for the Japanese group Rakuten. He started his career working at Thales on defense projects using neural networks as early as 1990, and on virtual car prototyping for Renault and Honda, developing advanced computer graphics technology. He later worked in the domain of mobile communication with Safran and with several startup companies in the domain of artificial intelligence and virtual reality. He has been CTO of Living Actor, a company creating virtual assistants, and CTO of Rakuten France. He has also coordinated and contributed to several French and European collaborative research projects.