Since January 2018 he is the Head of the EC Representation in Slovakia. In the period 2011-2017 he was Deputy Director-General for Food Safety of the Directorate-General for Health and Food Safety of the European Commission. He was also Acting Director-General in the period November 2014 – August 2015. In the period 2005–2010, he was Director for Nature, in the Directorate-General for Environment of the European Commission. During the Czech Presidency to EU Council in 2009 he was appointed as Minister of Environment of the Czech interim government. Before he started his career in the European Commission, he was Deputy Minister in the Czech Ministry for Environment and prior to this, he worked for 9 years as a professional soil biologist in Slovak Academy of Sciences.