Dr Konstantinos Gkiotsalitis is an Assistant Professor in data science in transportation engineering at the Transport Engineering and Management (TEM) group, Dept. of Civil Engineering, University of Twente. His research focuses on mathematical modeling and optimization in transport, with specific emphasis on public transport planning and operations. From 2012 until 2018, he was conducting industrial research related to public transport optimization at NEC Laboratories Europe (Heidelberg, Germany) with a specific focus on EU and APAC markets.  He received his PhD from the National Technical University of Athens on unveiling the mobility patterns of individuals and matching the public transportation supply with the travel demand. He also received his bachelor's degree in Civil Engineering from the National Technical University of Athens (2010) and his MSc in Transport and Sustainable Development from Imperial College London and University College London (2012). He has been involved in several EU and international projects on smart cities, urban mobility, public transport operations, MaaS, and logistics, and he holds several patents in the aforementioned areas. He is also Review Coordinator of the Transit Management and Performance committee (AP010) at the Transportation Research Board, and he has served as guest editor on public transport-related special issues in scientific journals. He has authored more than 45 peer-reviewed scientific articles in international scientific journals in the area of public transport optimization and he has received the 2022 Best Paper Award in the highly impactful Transport Reviews journal.