Career
He is currently the skip the national team of Finland. Kauste is one of the most successful curling players in Finland, with over 20 medals in the Finnish Curling Championships (juniors, men"s, mixed, mixed doubles). Kauste started curling in 1994 with his father Timo Kauste.
In 1998, Kauste made his first international appearance at the World Junior Curling Championships.
Kauste played in the 2002 and 2003 World Curling Championships with Team Finland, skipped by Markku Uusipaavalniemi. The other players of the medal team were Aku"s sister Oona Kauste, Pauli Jäämies and Sanna Puustinen.