Satosaari played his first five years as a pro with his hometown team JYP in the SM-liiga. When the team unloaded several players after a disappointing 1999-00 season, Satosaari made his way abroad, spending the next season with the Newcastle Jesters in the British ice hockey league. Satosaari then returned to Finland for a season with Ässät, and in 2002-03 he represented Bremerhaven REV in the German second league in the fall, and finished the year with Ilves. In 2003-04 Satosaari played for the Newcastle Vipers in Great Britain, and made an unusual career move when he chose to play in Slovenia for the 2004-05 season.