After graduating in 1988 from the Technical University in Graz with honors, a large variety of buildings have been realized by the company, including schools, public swimming pools, office buildings and housing. In 1998 he won the competition for the Passerelle Simone-de-Beauvoir over the Seine, in 2002 Feichtinger won the competition for the new access bridge to Mont Saint-Michel, a monument classified world heritage by UNESCO, with a total length of 1841 meters. The bridge opened to pedestrians in July 2014 and shuttles in December 2014, in 2014, Dietmar Feichtinger was elected permanent member of the Academy of Arts Berlin