He joined Architecture from his academic role in TU Delft faculty Industrial Design Engineering. Based on work from numerous EU funded research projects, current linear economy approaches mean that the security of resources will become increasingly constrained. David’s research proposes a circular approach to business, design and development in cities, via the Circular Built Environment hub. David is a TU Delft lead for the pioneer university status with the Ellen MacArthur Foundation for a circular economy. He is the TU Delft lead in a Horizons 2020 project, ProSUM - Prospecting Secondary raw materials (critical materials) in the Urban Mine and mining waste and the recently completed H2020 project ERN – European Remanufacturing Network. David leads projects in the EU KIC EIT Raw Materials (sustainable exploration, extraction, processing, recycling and substitution). More recently the EU funded H2020 Pop Machina (circular cities) started in June 2019.