Winner of the Kiefer Hablitzel Göhner Music Prize 2019, Jansen Ryser has extensively performed throughout Europe as well as in the United State. Praised for his musicianship, his playing was described as « combining a natural pianism with a mature musical sensibility and poetic eloquence ». Invited by numerous festivals, he has performed as soloist and chamber partner notably at the Verbier Festival, Gstaad Menuhin Festival, Lavaux Classic Festival, Plovdiv International Chamber Music Festival, Vienna Young Pianist, Art et Musique de Sierre, Festival de la Madeleine, Opera Festival of Montperreux.

Making his debut with orchestra at age 15 on the prestigious stage of the Menuhin Festival in Gstaad, Jansen Ryser has since played with several orchestras: Camerata Armin Jordan (Orchestre de la Suisse Romande), Haute Ecole de Musique de Genève Orchestra, CMgo Orchestra, Amamusique Orchestra. His performance has taken him to prestigious venue such as Victoria Hall in Geneva, Tonhalle in Zürich, Ehrbar Saal in Vienna, Stravinsky Hall in Montreux, Kursaal Casino in Bern among others.

A passionate chamber musician, Jansen Ryser has toured across Europe with violinist Anthony Fournier and has collaborated with Sylviane Deferne, François Guye and Uxia Martinez Botana among others.

Beside the Kiefer Hablitzel Prize, he is laureate of many national and international awards: first prize and special prizes at the Swiss Competition Jeunesses Musicales ; the Heinrich Gattermeyer Prize in Wien (Austria); first prize at the Haydn Competition in Geneva ; first prize at the Debussy Competition and French music in Geneva. More recently, he won the 2nd prize, unassigned 1st prize in chamber music competitions Gaetano Zinetti with his duo partner, violinist Anthony Fournier. He is a recipient of the Leenaards Foundation Art Scholarship.

He had benefited from the advice of Paul Badura-Skoda, Ferenc Rados, Eberhard Feltz, Nelson Goerner, Bjoern Lehmann, Jeffrey Swann, Krzysztof Jablonski, Jean-Marc Luisada, Susanna Spaemann, Florian Krumpöck, Masahi Katayama, et Julia Goldstein.

Born in 1994 in Lausanne, he began studying the piano at the age of 5 and entered the Conservatoire de Lausanne. In 2008, admitted to the pre-professional section of the Geneva Conservatory, he joined the class of Adrian Kreda. He received a bachelor and soloist master degree in piano in the class of Sylviane Deferne at the Haute Ecole de Musique de Genève. He received the Filipinetti. He also achieves a bachelor degree in percussion at the Haute Ecole de Musique de Lausanne.

Currently, he is studying with Matti Raekallio at the Juilliard School in New York with the help of the Theodora J. Nichols Piano Scholarship.