 In 2004, he competed in his first World Championship with Team Finland and also made the roster for the 2005 and 2007 World Championships, winning silver in 2007.In June 2016, a couple of weeks after he put an end to his playing career, Söderholm was named development coach of EHC München of the German top-flight Deutsche Eishockey Liga (DEL).In May 2017, he took over the head coaching job at SC Riessersee (SCR), München's affiliate in Germany's second-tier league DEL2.