 Järvenpää represented Finland's national team on several occasions, including the 1992 Olympic Games and the World Championships in 1985, 1986, 1989, 1991 and 1992 (silver medal).He served as assistant coach of Liiga team SaiPa from 2003 to 2005 followed by a one-year stint with fellow Liiga outfit Lahti Pelicans in the same position.Järvenpää took over head coaching duties at HDD Olimpija Ljubljana, a Slovenian member of the Austrian Hockey League (EBEL), in 2009 and remained in that job until 2012.