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 
Henock Belete Asfaw
Water and Sanitation adviser 
Nadine Arce Haanraadts
Sanitation adviser 
Lauren Pope
Communications specialist & Sanitation adviser 
Tjitske Leemans
Senior adviser 
Sethupathy Azhaganandam
International solid waste engineer 
Sumeet Pawar
Junior adviser FSM & circular economy
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