He performed as oboe soloist in 1986 in the Orchestre Symphonique de Bretagne, in 1987 in the Orchestre Symphonique de Mulhouse-Opéra du Rhin and from 1992 to 2012 in the Sinfonieorchester Basel. In 1992 he was awarded first prize in music from the Fördergemeinschaft in Freiburg (European Cultural Foundation) He has also been requested to play with several orchestras such as the Orchestre Symphonique de la Suisse Romande, the Tonhalle-Orchester Zürich, the Orchestre National de France, the Südwestfunk Baden-Baden Sinfonieorchester, the Orchestre National de Russie, the Zürcher and Basler Kammerorchester, the Orchestre National de Lyon, the Orchestre National de l’Opéra de Lyon. He has performed as a soloist under the baton of famous conductors such as Nello Santi, Armin Jordan, Marcello Viotti, Heinz Holliger, and Walter Weller.
He also dedicates himself to the chamber music repertoire, notably with the Schweizer Bläserquintett and has taken part in numerous festivals: Montreux, Gstaad, Saint Moritz, Martigny-Champey and Prades. He recorded with the Chamber Orchestra Les Solistes de Lorraine, a CD
of baroque concertos. A collaboration with the pianist Joseph Nykiel and with the Schweitzer Radio DRS 2 resulted in the production of two further CDs.: the first one entitled Hautbois Français dedicated to the twentieth-century French composers, and the second devoted to 19th-century romantic oboe pieces.
He is at the cutting edge of contemporary creation for the oboe and different pieces have been written for him. In July 2005 he produced for the first time Dialogues by the French composer Vincent Paulet, and in January 2006 at Radio-France for the INA-GRM, Spatio Intermisso Temporis by the Italian composer Jacopo Baboni Schilingi for Christian Schmitt (hautbois) et live computer. Then in 2007, Shore was composed for him by the German composer Hans Tutschku for the Electro-acoustic Music Festival in Arc et Senans. In July 2009, he produced for the first time in the Town Hall of Birmingham (UK) the « Sonate pour hautbois et piano » written for him by the French composer Laurent Riou. With this same composer he writes a transcription for oboe and piano of Maurice Ravel’s « Le Tombeau de Couperin » published by Egge Verlag (Koblenz am Rhein).
Recently, Christian Schmitt has been tending more and more, and with great enthusiasm, towards a large range of educational activities. Every year he is invited for master-classes in the Conservatoires Nationaux Supérieurs de Musique in France, as well as in Europe and in North American and South East Asian universities.
Since 2008 he has taught as Professor in the Staatliche Musikhochschule in Stuttgart (Germany), succeeding Prof. Ingo Goritski.
He is a member of numerous juries of competitions for the French Conservatoires Nationaux Supérieurs and for German and Swiss Musikhochschule. He was also requested to serve as judge for the 2007 Gillet-Fox International Competition in Ithacca-New York and for the extremely prestigious ARD Oboe Competition in Munich.