[4][5] In 1996, Preuss moved to Welthungerhilfe in Bonn, where he initially worked as head of the “Programs and Projects” department.

On July 1, 2009, Hans-Joachim Preuss became managing director of GIZ and has been a member of the five-strong executive board since 2011.

[10] He teaches in particular on German and European development and security policy issues with African, Caribbean and Pacific island states.

He has many years of professional experience at various levels in various governmental, non-governmental and academic development cooperation organizations in Germany and abroad.

He was primarily concerned with development and security problems in Africa, with global migration movements and the future of international cooperation and documented these considerations in numerous publications.