Studied Political Science and History of Art at the University of Amsterdam. He worked at the Central Museum of Utrecht as a director of exhibitions from 1996 to 2004. After that, he was appointed as director at museum goudA until 2009. From 2010, he has been working as a director of EKWC, the European Ceramic Workcenter in the Netherlands. He is also chairman of the board of Dance Brabant and of the union of Dutch and Belgium Workshops. In 2010, he started as a jurymember of the competition of International Biennale of Vallauris ,France, and 2011 juror of the competition of the 2nd British Ceramics Biennale, and 2011, 2015 and 2021 juror of International Competition of Gyeonggi International Ceramic Biennale, Korea. In 2020 he was juror of the International Competition of Faenza. Ranti Tjan also juried international competitions of Denmark, Australia and the Netherlands. He gives lectures worldwide and is internationally active as curator of exhibitions.