Koen worked as a tax consultant from 1995 to 2000 at one of the four large tax consultancy offices in Amsterdam and Paris. In 2000 he opted for the international business world and worked as international tax manager at VNU and then at TNT. His focus was on transnational corporation taxes and M&A transactions. Koen has been employed at Legal People since December 2006 as executive search advisor and has been on the Board for the past few years. Koen mainly serves as intermediary for senior and top level in-house and partner positions in the tax consultancy and legal professions.