Born in 1988 in Columbus, Ohio, John Stulz has been a member of the Paris-based new music group Ensemble Intercontemporain and founding co-artistic director of VIVO Music Festival since 2015. He has performed around the world with the Ensemble Intercontemporain and organizations like Klangforum Wien (Vienna, Austria), the Marlboro Music Festival, Ensemble Modern (Frankfurt, Germany), Omnibus Ensemble (Tashkent, Uzbekistan),and the St Paul Chamber Orchestra.

From 2007 to 2012, John was founding co-artistic director of the Los Angeles based What's Next? Ensemble with conductor Vimbayi Kaziboni. In 2019, John created Trio Estatico with the violists Megumi Kasakawa (Ensemble Modern) and Paul Beckett (Klangforum Wien), bringing together three of Europe's leading new music violists to create new music for their unique ensemble.

In 2021 John was named viola professor at the Conservatoire national supérieur de musique et de danse de Lyon (CNSMDL). He has taught at the Écoles d'arts américaines de fontainebleau since 2017 and given master classes and workshops at the Conservatoire national supérieur de musique et de danse de Paris, Oberlin, Rice University, Juilliard, IRCAM, Lucerne Festival Academy, New World Symphony Orchestra, and at regional conservatoires throughout France.