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Valtteri Karlsson has over 15 years of experience in the construction industry, currently serving as °Õ²âö±èää±ô±ô¾±°ì°ìö and Site Manager at Fira Oy since January 2010. Prior to this role, Valtteri Karlsson worked as a Site Manager at YIT from May 2004 to November 2009. Valtteri Karlsson holds an Engineer’s Degree from Helsingin Ammattikorkeakoulu Stadia, completed in 2006.