He appears regularly at major festivals including the Gstaad Menuhin Festival, Lavaux Classic,  Week-End Musical de Pully, Interfinity Basel, Kammermusik Festival Basel, Iasi International  Chamber Music Festival, Plovdiv International Chamber Music Festival, Les Jardins Musicaux de  Cernier, Vienna Young Pianists, and Art et Musique de Sierre, both as soloist and chamber  musician. 

A frequent soloist with orchestras, Jansen made his debut at the age of fifteen at the Menuhin  Festival in Gstaad, and in 2014 he performed at the Victoria Hall in Geneva. More recently, he  appeared with the Sinfonieorchester Basel in Prokofiev’s Piano Concerto No. 1 at the Stadtcasino  Basel. 

Born in Lausanne in 1994, Jansen began playing the piano at the age of five. He studied at the  Haute École de Musique de Genève and at The Juilliard School in New York as a recipient of the  Theodora J. Nicolas Piano Scholarship, working with Matti Raekallio, Sylviane Deferne, and  Adrian Kreda. In 2017, he received the Filipinetti Award for Best Soloist Master. He further refined  his artistry with Paul Badura-Skoda, Eberhard Feltz, Andreas Staier, Franz Helmerson, and Nelson  Goerner. A recipient of cultural scholarships from the Leenaards and Dénéréaz Foundations, he  later completed his studies at the Hochschule für Musik und Tanz Köln and the Musik Akademie  Basel under the guidance of Claudio Martínez-Mehner.