Born in 1994 in Lausanne, Jansen Ryser began playing the piano at the age of 5. A graduate of the Haute Ecole de Musique in Geneva and of the Juilliard School in New York thanks to the generosity of the Leenaards Foundation, he studied there with Matti Raekallio, Sylviane Deferne and Adrian Kreda. He received the 2017 Filipinetti Prize for the best master soloist. He perfected himself with great masters such as Paul Badura-Skoda, Ferenc Rados, Eberhard Feltz, Andreas Staier, Franz Helmerson, Nelson Goerner.
Winner of the Kiefer Hablitzel Göhner Music Prize, Jansen Ryser has performed across Europe as well as in the United States. Praised for his musicality, his playing has been described as "combining natural pianism, musical sensibility and poetic eloquence".
Invited by numerous festivals, he has performed as a soloist and in chamber music at the Verbier Festival, Gstaad Menuhin Festival, Lavaux Classic Festival, Plovdiv International Chamber Music Festival, Les Jardins Musicaux de Cernier, Vienna Young Pianist, Art et Musique de Sierre, Opera Festival of Montperreux.
Playing regularly with an orchestra, Jansen Ryser made his debut at the age of fifteen on the prestigious stage of the Menuhin Festival in Gstaad and in 2014 at Victoria Hall.
A passionate chamber musician, Jansen Ryser has collaborated notably with Sylviane Deferne, François Guye, Anthony Fournier, Basile Ausländer and Uxia Martinez Botana. His long-standing collaboration with soprano Sophie Negoïta recently led them to stand out at the International Lili and Nadia Boulanger Competition in Paris.
Jansen Ryser is the recipient of the Theodora J. Nicolas Piano Scholarship, as well as the Dénéréaz Foundation.