Josa Marx was born in Suhl in 1985. Between 2005 and 2008 he completed his training as a ladies' tailor under the direction of Elise Topel, before working as an intern for Vivienne Westwood in London. He then studied costume design at the University of the Arts in Berlin. Since 2004 he has worked as a freelance costume and stage designer, including at the Thalia Theater Hamburg, Theater Dortmund, Schauspiel Leipzig, HAU Berlin, Schauspielhaus Vienna, Deutsches Theater Göttingen, Ballhaus Ost Berlin, Theater Bremen, Schauspiel Köln, Opera Flanders, Opera Freiburg, State Opera Hanover, Maxim Gorki Theater, Berlin, Berliner Ensemble.