In November 2020 Dr. Mayssoun Zein Al Din was appointed by the state government of North Rhine-Westphalia to become Executive Director of the newly founded Academy of International Affairs in Bonn. From 2012 to 2020 in the office of the former Minister-President of North Rhine–Westphalia Armin Laschet she was responsible for scientific approaches to topics of international politics. Prior to that she led, as Executive Director, the NGO Open Door International, which is concerned with the implementation of international educational exchange programmes for young people.

Dr. Mayssoun Zein Al Din lectures at RWTH Aachen University in the programme of study Theology and Global Development and at the Department for Political Sciences and Sociology of the University of Bonn. She has lectured at RWTH Aachen University in the Master of European Studies department. She has also lectured at the Centre for Islamic Studies of the University of Münster.

She studied at RWTH Aachen University and earned a doctorate there in Political Sciences. She is recipient of the Springorum Denkmünze and the Borchers Plakette prizes for excellent scientific achievements from the RWTH Aachen University.

Dr. Mayssoun Zein Al Din is a volunteer on the boards and advisory boards of various organizations in the fields of art, culture and education.