On 13 March 2008 Sander made his World Cup debut in the Bormio Super-G. On 18 December 2010 he scored his first World Cup points in the Val Gardena Downhill, finishing in 28th place. He competed at the 2011 World Championships in Garmisch-Partenkirchen, Germany, in the Super-G and Downhill. He competed at the 2015 World Championships in Beaver Creek, USA, in the Super-G, Downhill and the Super combined. On 29 December 2015 he scored his first Top 10 World Cup result in the Santa Caterina Downhill, finishing in 10th place. He won the silver medal in the downhill competition at the World Ski Championships 2021 in Cortina d'Ampezzo.