After completing his diploma in 1989, Pysall went to London and worked at Foster Associates. From 1990 until 1992 he lectured at the London Architectural Association. Following he worked at Jean Nouvel´s office in Paris until the foundation of office Pysall . Ruge Architekten with Peter Ruge 1993 in Berlin and 2006 in Hangzhou, China. Since 2011 Justus Pysall operates under Pysall Architekten. Justus Pysall has lectured national and international, among other places, in USA, Brazil, Italy, Poland and Russia. He is a member of the Architects’ Association Berlin, the BDA Berlin - member of the board, the Schinkel Committee of the AIV, the Stiftung Baukultur and the GeSBC (DGNB) – German Sustainable Building Council.