Castonguay’s practice is based in digital and conceptual art. His works use obsolete technology and open source software and have been presented in New York, Beijing, Madrid, Berlin, Beyrouth, São Paulo and Graz. His works are included in the collections of the Canada Council Art Bank, the Los Angeles County Museum of Art, the Montréal Museum of Fine Arts, the Musée d’art contemporain de Montréal, the Musée national des beaux-arts du Québec, the Canadian Museum of Contemporary photography as well as private collections.
He is represented by the gallery Pierre-François Ouellette art contemporain. Professor at UQAM’s École des arts visuels et médiatiques in Montréal, he studied at the University of Ottawa (B.F.A. 1991 and B.A. 1993) and at Concordia University, Montréal (M.F.A. 2004). He is a founding member of the not-for-profit media lab Artengine.