Joshua Nathan Rubin served as the Program Director and then Artistic Director of the International Contemporary Ensemble from 2011-2018, where he oversaw the creative direction of more than one hundred concerts per season in the United States and abroad. As a clarinetist, the New York Times has praised him as, "incapable of playing an inexpressive note."

Joshua has worked closely with many of the prominent composers and performers of our time, including George Crumb, Matana Roberts, Alvin Lucier, David Lang, Chaya Czernowin, Du Yun, Christian Wolff, Cory Smythe, George Lewis, Steven Schick, Kaija Saariaho, Craig Taborn, Pauline Oliveros, Okkyung Lee, Nathan Davis, Tyshawn Sorey, John Zorn, and Mario Davidovsky. Joshua can be heard on recordings from the Nonesuch, Kairos, New Focus, Mode, Cedille, Naxos, Bridge, New Amsterdam, and Tzadik labels. His album There Never is No Light, available on the Tundra label, highlights music that uses technology to capture the human engagement of the performer and the listener.

This season he will perform on modern and historical clarinets in New York with the International Contemporary Ensemble, Teatro Nuovo, the American Composers Orchestra, at Harvard University, in Los Angeles with Wild Up, Monday Evening Concerts, Tesserae Baroque, at the Ojai Music Festival with Rhiannon Giddens, and in Germany, Italy, Switzerland, Berlin, Miami, Boston, Houston, Kansas City, San Diego, and Chicago.

His clarinet studies were mentored by Lawrence McDonald, Mark Nuccio, and Steven Cohen. He served on the faculty of the Banff Music Centre's Ensemble Evolution summer program from 2016-2019. Rubin is on the faculty of soundSCAPE Festival and Ensemble Evolution. He serves on the faculty of the College of the Performing Arts at The New School and is Artist-in-Residence at University of California Santa Cruz in 2024.

Joshua holds degrees in Biology and Clarinet from Oberlin College and Conservatory, and a Master's degree from the Mannes School of Music.

His passion for technology in arts led Joshua to develop LUIGI, management software that is available to ensembles and other arts organizations who value transparency and collective management, as well as his ongoing work to make electronic music technologies easier to use for performers and composers. He maintains an artistic presence in New York and Los Angeles.