Tomasz Hachaj received an M.S. in computer science from the Krakow University of Technology, Poland, in 2006, a Ph.D. degree in computer science from AGH University of Science and Technology, Krakow, Poland, in 2010, and a D.S. (habilitation) in computer science from Wrocław University of Science and Technology, Poland, in 2017. He works in the Department of Applied Computer Science at AGH University of Science and Technology, Kraków, Poland. He has participated in various Polish national projects, being involved at both the technical/research and administrative levels. He is the Principal Investigator in the Machine Learning group in the Cosmic Ray Extremely Distributed Observatory (CREDO). His research interest is oriented to the development and application of deep learning, signal processing, and pattern recognition methods in various fields.