Şimşek has nine Turkish champion titles in different age categories of slalom and giant slalom disciplines, and twice in grass skiing. He is holder of more than 50 medals. In the national team, Şimşek represented his country 122 times at international competitions. His major international participations include FIS Alpine World Ski Championships in 2007 Åre, Sweden and 2011 Garmisch, Germany, Winter Universiades in 2007 Turin, Italy, 2009 Harbin, China and 2011 Erzurum, Turkey as well as diverse FIS competitions between 2005 and 2013.