Originally from Nice, France, Sandrine Cassini studied at the Conservatoire Superieur de Paris and won the Professional Prize at the Prix de Lausanne before joining the Paris Opera Ballet. Sandrine joined Ballets de Monte-Carlo as a first soloist (where she was nominated among the 20 Dancers to Watch), she then performed with Zurich Ballet, Ballet British Columbia, National Theater Mannheim and most recently Bejart Ballet. She has performed leading roles in works by George Balanchine, William Forsythe, Nacho Duato, Jean-Christophe Maillot, Heinz Spoerli, Maurice Bejart, Alonzo King and John Neumeier.
In 2013, Sandrine moved to San Francisco and became a faculty member at Alonzo King LINES Ballet, working both as a teacher and choreographer, as well as a guest teacher at ODC/Dance.
Sandrine took up the position of Ballet Mistress with the Royal New Zealand Ballet in 2014 under the Artistic Directorship of Ethan Stiefel and in 2016, she was a guest assistant at the Dresden Frankfurt Dance Company.
She has been a guest teacher for amongst others; the Basel Ballet, Bern Ballet, Heidelberg Staatstheater, Ballet British Colombia and Ballet Ireland.