Paatelainen began his career with
FC Haka, moving on to
AC Allianssi and
FC KooTeePee before joining
Scottish side
Aberdeen in July 2004. After 10 months at
Pittodrie, he returned to
Finland without making any first team appearances for the Dons, joining
Veikkausliiga side
FF Jaro. In August 2005 he scored 5 goals in one game for Jaro, against his former club FC KooTeePee. In January 2006, Paatelainen joined Scottish side
Cowdenbeath on loan, teaming up with his brothers
Mixu (then manager) and
Markus. He scored 7 goals in 9 games for Cowdenbeath who would be promoted as champions of the
Scottish Third Division at the end of the season. He then returned to FF Jaro in preparation for the new summer season in March 2006. In December 2006 Mikko joined
TPS, a team that was then coached by his older brother
Mixu. Mikko has been an outstanding goalscorer and player throughout his career also being FC TPS Turku's top scorer 2006–07. In 2010 he joined
IFK Mariehamn, after three seasons with TPS. ==External links==