After graduating in architecture at the Technical University Darmstadt and the Università degli Studi di Firenze, freelance work as an architect in his own office since 1992.
1995–98 Research assistant at the Faculty of Architecture at the Technical University Darmstadt – Department of Design and Building Science, Prof. Andreas Brandt.
1998 Appointment to the BDA – Association of German Architects
1999–2004 Member of the Appeals Committee of the BDA Darmstadt-Starkenburg
since 2002 Partner in Cornelsen+Seelinger Architects
2004–2006 Member of the BDA Board of Darmstadt-Starkenburg
since 2012 Member of the Board and Treasurer of the Society of Friends of the German Architecture Museum, Frankfurt
from 2019 +Seelinger Architekten+Ingenieure