Joosje Duk was born on October 1, 1994, in The Hague, The Netherlands. When Joosje was fifteen, she was cast as lead character Mirjam in the children's television series Snuf the Dog (Snuf de Hond), directed by Steven de Jong. Snuf the Dog and the Spooky Castle won a Double Platina Award for topping more than 200,000 DVD sales in The Netherlands.