After completing his diploma at the University of Stuttgart in 1985 he worked for four years at Bühler+Faecke Architects in Leinfelden before he began in the office of James Stirling, Michael Willford and Associates in Stuttgart 1990 where he became an Associate in 1997. In 2001 he became a Managing Director of Wilford Schupp Architekten.

As the project architect, he played a leading role in building of the State Conservatory with cinema centre in Mannheim, the State History Museum Stuttgart, the British Embassy in Tblisi, the State Conservatory in Trossingen and the Federal Bank of Baden-Württemberg in Karlsruhe.

Apart from his engagement in current projects, Stephan is responsible for the financial management of the ORANGE BLU company and the Projects.