Member of International Association for Mission Studies and its European branch IAMS
1996-
Member of Arbeitsgemeinschaft für evangelikale Missiologie
1997-
Member of Deutsche Gesellschaft für Missionswissenschaft
1998-
Founding member, Chairperson (1998-2006) of Missiological Section of Kollegium Doktorum of the Reformed Church in Hungary
2002-
Founding member, member of steering committee, president (2004-2015), vice-president (2015-) Central and Eastern European Association for Mission Studies (CEEAMS)