He started his career in his hometown Taufkirchen an der Pram as striker. Schiemer came through the youth ranks at SV Ried to make his professional debut in the 2003/2004 season at just 17 years of age. The same year he was 3rd in the U17-European Championship. In 2005, he joined Austria Wien. On 9 April 2009 FC Red Bull Salzburg has for the season 2009/2010 Schiemer from league rivals FK Austria Wien required, the 23-year-old Austrian national team player signed with the Red Bulls a contract until 30.06.2012.