Isaac studied at the Hamburger Schauspiel-Studio Frese. During this time he participated in independent theatre productions in Kiel and Hamburg. He also made numerous appearances on television and radio plays. From 2004 he was a member of the ensemble at the Stadttheater Giessen, where he played, among others, Don Carlos and Torquato Tasso. Since 2009 he has been a member of the Schauspiel Frankfurt ensemble. He can be seen in various productions including »Werthers Leiden«, »The Man Outside« and he plays the title role in »The Ritual Slaughter of Gorge Mastromas«.