[1] He represented his nation Austria at the 2014 Winter Olympics, and also became a double medalist, gold and silver, in alpine snowboarding at the 2011 FIS Junior World Championships in Chiesa in Valmalenco, Italy.

[2][3] Mathies currently trains for the Austrian team and for his original club WSV Sankt Gallenkirch, under his personal coach and mentor Tom Weninger.

[4] Mathies qualified for two alpine snowboarding events (including the first-ever men's parallel slalom) at the 2014 Winter Olympics in Sochi by achieving top three finishes from the FIS World Cup series in Rogla, Slovenia and in Carezza, Italy.

[4][5] In the men's giant slalom, Mathies was disqualified from the tournament after missing a gate on his first seeding run.

[6] Three days later, in the men's slalom, Mathies recorded a total time of 58.93 to grab a third spot in the seeding round but fell short behind Italy's Aaron March in the quarterfinal race by 29-hundredths of a second.