Diana Hollmann is now an advisor for Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH. GIZ is an organization that supports the German Government in achieving its objectives in the field of international cooperation for sustainable development. Prior to her role as an advisor, Hollmann served as a manager for the private sector cooperation within GIZ. There she advised the German Ministry for Economic Cooperation and Development (BMZ) on inclusive business, social enterprise, and impact investing. As well as, developed formats for the cooperation with the private sector in fields of inclusive business and impact investing.