Jan has over 25 years of experience in corporate / international tax, including 4 years with the Big 4 (Deloitte) and 20 years with the Dutch tax authorities. Jan has worked for large and medium sized Dutch based companies and multinationals. As a tax inspector, Jan worked in the large companies team of Rotterdam. Jan has extensive experience in managing tax controversies and was involved with horizontal supervision. Jan graduated in economics (specialization tax) at the University of Tilburg in 1983. Jan is a member of the Dutch Association of Tax Advisors (NOB).