An entrepreneur and venture capitalist, Ondrej experienced his first successful business endeavour before he graduated from college in 1996. Several business enterprises later, he is now managing the early stage venture capital firm Credo Ventures, which he co-founded in January 2009. Until December 2008 he served as the Senior Investment Director of MCI Management S.A., where he was responsible for managing investments in the Czech Republic, Slovakia, Romania, and former Yugoslavia. Ondrej views venture capital as a tool to help entrepreneurs reach their goals, execute their visions, and boost the economy by supporting innovative ideas and projects. In 2009 – 2012 he also starred in the investment TV show Dragons' Den (Den D) on Czech TV.