In 1992, he joined the Czech National Bank (Česká národní banka) as Deputy Director of the Institute of Economics, and in 1996, he was appointed an adviser to the ČNB Governor.
He was formerly a member of the Scientific Council of the Faculty of Social Sciences at Charles University in Prague, where he lectures on financial market issues and European Economic integration (a 3-modeule course supported by the Jean Monnet grant which also includes courses by Katerina Smidkova and Wadim Strielkowski.
[2] As an adviser to Prime Minister Josef Tošovský in the first half of 1998 Dedek headed the team of authors who prepared the document Economic Strategy of Joining the European Union: Starting Points and Directions.
[1] In 2017, President Milos Zeman appointed Dedek and fellow economist Marek Mora to the seven-member board of the Czech National Bank.
He has participated in internships and study programmes in the United Kingdom (London School of Economics, University of Warwick) and the USA (International Monetary Fund, Federal Reserve Bank of Kansas City).