Kauste played in the 2002 and 2003 World Curling Championships with Team Finland, skipped by Markku Uusipaavalniemi. He has played in the European Curling Championships four times; in a team skipped by Uusipaavalniemi in 2002, and 2004 in a team skipped by Tomi Rantamäki in 2009, and as skip in 2012 where he won the Group B competitions, promoting Finland to the Group A competitions in 2013.