Professional Activities (selected)
- 2019 - 2021: Member of the editorial board, Journal of English Linguistics
- 2011 - present: Editor, Varieties of English Around the World (Amsterdam: Benjamins)
- 2011 - present: Member of the editorial board, English World-Wide
- 2005 - 2009: Member of the executive board, German Society for English Studies (Deutscher Anglistenverband)
- 2003 - 2010: Member of the editorial board SKASE Journal of Theoretical Linguistics
- 2002 - 2008: Editorial assistant, English World-Wide