Gijs enjoys setting up initiatives which solve complex problems in areas of circular economy and waste management. His areas of expertise are food and organic waste, plastics, sustainable packaging, behavioural aspects, sustainable smart cities and metropolitan areas, refugee camps, business strategy, change management and entrepreneurship. Both in the developed and in developing countries. He has realized projects for clients like the World Bank, Unicef, International Solid Waste Association, Rijkswaterstaat (Ministry of Infrastructure and Environment), VNG-international, Knowledge Institute of Sustainable Packaging, Dutch Waste Management Association, Dutch Solid Waste Association and cities like Amsterdam, Rotterdam, The Hague and Utrecht.