Soon after the years spent at the Academy of Sciences, he went on to work in the Office of the President of the Republic, Václav Havel, in the Press Department (March 1993 - January 1995).
For the next two years (February 1995 - June 1997), Šitler worked in the Foreign Policy Department of the Office of the President, and in parallel, he served as an Advisor for President Havel's speeches.