• Member of the German Ecumenical Study Committee (DÖSTA) [since 2005].
• Member of the Historical Advisory Board of the Federation of Evangelical Free Churches
• Member of the Scientific Advisory Board of the Confessional Studies Institute of the Evangelical Federation (Bensheim) [since 2007].
• Member of the Interconfessional Theological Working Group (ITA) [since 2007]
• 2007 editor-in-chief and from 2012 managing editor of the international journal "Kirchliche Zeitgeschichte/Contemporary Church History" (KZG/CCH)
• Member of the Academic Advisory Board of the Johannes a Lasco Library (Emden) [since: 2010];
• Chair of the Gesellschaft für Freikirchliche Theologie und Publizistik (GFTP) and editor of the "Zeitschrift für Theologie und Gemeinde" (ZThG) [since 2011].
• Member of the project management team "Freiheitsraum Reformation" 2012-2017 (www. freiheitsraumre-formation.de)
• Corresponding member on the BWA Mission, Evangelism and Theological Reflection (METR) Commission on Baptist Heritage and Identity [since 2011]

Consultant for the DFG on funding projects in the field of "modern church history and diaconal history" [since 2011]
Consultant for the re-accreditation of theological universities and subjects by the German Council of Science and Humanities [since 2010]

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