Dr. ir. Els Leclercq is an urban designer and researcher. As a research fellow she participates in various research projects on the circular built environment at the Faculty of Architecture of the Technical University of Delft and AMS institute in Amsterdam. In the field of circularity she focuses on innovative processes to sustainable urban development. She is particularly interested in how decentralised circular approaches can address global and local societal issues, in which active citizens engagement, datafication and digitalization (or the ‘smart city’), and a just and sustainable city have a central position.