In June 2006, Schnier won the Austrian National Championship, beating Dietmar Burger in the final. Since 2007, Schnier has played in tournaments sanctioned by the German Darts Corporation, an affiliate of the PDC where its highest ranked player earns automatic qualification for the PDC World Darts Championship. He has made numerous quarter final and semi final appearances but has so far only managed to win one GDC ranked event in Niedernhausen in May 2008.
Schnier finished 2nd in the GDC rankings in 2008 and as the top GDC player Mensur Suljović qualified as one of the four top ranked Europeans on the PDC Order of Merit, Schnier earned qualification for the 2009 PDC World Darts Championship but lost to China's Shi Yongsheng 6-4 in the preliminary round.
Schnier signed a sponsorship deal with UK darts manufacturers Showtime Darts in 2016.
