ABOUT The world is an interconnected ecosystem. We believe that no issue in waste management is isolated. Our multicultural team with international experience and diverse cultural perspectives inspire creativity and innovation in waste management and beyond. We embrace this connectedness and encourage learning and collaboration among our teams, clients and partners across the world. WHERE WE WORK OUR TEAM
Han de Groot
Executive Director 
Roger de Vries
Chief Financial Officer (CFO) 
Jacqueline Barendse
Business and financial innovation specialist 
Stan Maessen
Senior sanitation adviser 
Valentin Post
Senior adviser 
Sophie van den Berg
International solid waste expert and plastic recycling adviser 
Kajetan Hetzer
Sanitation adviser 
Verele de Vreede
Urban solid waste managment expert 
Gert de Bruijne
Senior sanitation adviser 
Jeroen Ijgosse
Senior adviser 
Henock Belete Asfaw
Water and Sanitation adviser 
Nadine Arce Haanraadts
Sanitation adviser 
Lauren Pope
Communications specialist & sustainable dev. adviser 
Tjitske Leemans
Senior adviser 
Sethupathy Azhaganandam
International solid waste engineer 
Sumeet Pawar
Junior adviser FSM & circular economy 
Ranna Abdulhadi
Junior programme officer 
Fadli Mustamin
Junior technical adviser 
László Juhász
Junior expert - innovative finance 
Carolina Latorre
Programme Manager 
Jelle Janssen
Management assistant
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