Claas Danielsen studied documentary directing at the HFF Munich where he later became assistant to the professor. He made seven documentaries which won international awards and were sold to European broadcasters. In 1999 he built up Documentary Campus as Head of Studies. In 2004 he became Artistic and Managing Director of DOK Leipzig, the Int’l Leipzig Festival for Documentary and Animated Films. In 2016 Claas moved on to the MDM film fund (Mitteldeutsche Medienfoerderung) as Managing Director. He was board member of the German AG DOK, the European EDN, the Balkan Doc. Center and he is a member of the European Film Academy. Claas has taught at international film academies, served on numerous international festival juries and the selection committees of German film and media funds.