Achilleas Psyllidis is an Assistant Professor of Urban Mobility and Director of the Urban Analytics Lab at Delft University of Technology. He is also the Director of the Social Urban Data Lab at the Amsterdam Institute for Advanced Metropolitan Solutions. He is further affiliated with the Leiden-Delft-Erasmus Centre for BOLD Cities.

His research bridges urban planning & design, sustainable urban mobility, and spatial analytics. He explores how the design, structure, and perceived qualities of the urban environment affect the mobility and accessibility opportunities of different population groups. He develops innovative methodologies for measuring accessibility to destinations and analyzing human mobility dynamics in a variety of settings by leveraging advancements in spatial data science, graph theory, network analysis, and urban design. These measurement methodologies are subsequently integrated into open-source software tools (e.g., CTwalk Map) to improve urban mobility and support the design, planning, and policy toward more livable and inclusive communities.

He leads and participates in several research projects on urban mobility, environmental exposures, public health, and well-being. Additionally, he is a member of the ‘Pathways to Mobility Futures’ Vision Team of TU Delft's Transport & Mobility Institute. His research is funded by national (NWO, KNAW, Medical Delta) and international organizations (Horizon 2020, SSHRC Canada, FAPESP Brazil) and has benefited from collaborations with academic institutions across Europe, the United States, Canada, and Brazil. He serves on the Computation Urban Planning and Urban Management (CUPUM) Board.

• Accessibility Measurements
• Sustainable Urban Mobility
• Land-use and Transport Interaction
• Pedestrian Accessibility Analysis
• Walkability
• Urban Analytics
• X-minute Cities and Neighborhoods
• Healthy Cities
• Urban Form and Environmental Exposures

Before joining the Department of Sustainable Design Engineering, he held a postdoctoral position in Urban Data Science within the Web Information Systems group at the Faculty of Electrical Engineering, Mathematics, and Computer Science, TU Delft.

He holds an Engineering Diploma (Summa Cum Laude) in Architectural Engineering with a focus on urban planning and a Master of Science degree (Summa Cum Laude, Highest GPA) in Spatial Planning from the National Technical University of Athens. He earned his PhD in Spatial Data Science from TU Delft, Faculty of Architecture and the Built Environment. During his doctoral studies, he was affiliated with the Joint Research Center for Spatial Information between TU Delft and Wuhan University, as well as the Joint Research Center for Urban Systems and Environment between TU Delft and South China University of Technology.

He is a scholar of the Onassis Foundation, the European Union Social Fund, the Greek State Scholarships Foundation, the Foundation for Education and European Culture, and the A.G. Leventis Foundation.