Marcin Ratajczak (31, MBA) - CEO and Founder of SIOD. He has gained his first entrepreneurial experiences during his studies. In 2006 he co-founded a family owned business in the field of facility management. Beside sales he was responsible for planning, executing and controlling of operative processes. He was also responsible for up to 120 employees and has led the restructuring of the company after the economic downturn in 2008-2009. Furthermore he has founded a leisure boat selling company (2010-2011) and a trained men recruiting company (2012-). Since 2012 he is working on SIOD.