Jan Casier was born in Belgium. He studied at the Royal Ballet School in Antwerp. From 2008 to 2012 he was a member of the Royal Ballet of Flanders where he danced in ballets by John Cranko, William Forsythe, David Dawson and Christian Spuck. He appeared in David Dawson’s Faun(e) as a guest at the English National Ballet. From 2012 to 2014 he was a member of Ballett Zürich, where he performed roles in numerous Christian Spuck ballets, including Leonce in Leonce und Lena, Paris in Romeo und Julia and the title role of Woyzeck. He also danced in choreographies by Edward Clug, Sol León/Paul Lightfoot, Marco Goecke and Wayne McGregor. From 2014 to 2016 he was a member of the Semperoper Ballett Dresden. There he performed in choreographies by Aaron Watkins (Prince in The Nutcracker), William Forsythe, Alexei Ratmansky, David Dawson and Alexander Ekman. Jan Casier returned to Ballett Zürich in 2016. Since his return, he has danced in Forsythe’s Quintett, Godani’s rituals from another when and the title role in Edward Clug’s Faust and Marco Goecke’s Nijinski. He also appeared as Drosselmeier in Christian Spuck’s Nussknacker und Mausekönig. In 2019, he was named «Dancer of the Year» by the «tanz» magazine and was awarded the «Tanzpreis der Freunde des Balletts Zürich».