In 1995, together with Jean-Gilles Decosterd, he founded the firm Decosterd & Rahm. The firm represented Switzerland at the 8th Bienniale of Architecture in Venice (2002) with the installation Hormonorium. Since 2004, he has been practicing independently and working on public and private projects in Europe. He has participated in numerous exhibitions worldwide notably at Kunsthaus Graz (2006); Centre Pompidou and the Centre culturel Suisse in Paris and the Mori Art Museum, Tokyo (all 2005); Center for Contemporary Art Kitakyushu (2004); and the San Francisco Museum of Modern Art (2001). He is currently exhibiting at the Canadian Centre of Architecture in Montreal, Quebec an installation titled Environment: Approaches for Tomorrow, together with Gilles Clement.