Education
1988—1995 studied English, Spanish and Computer Science at the University of Leeds and the Free University of Berlin
1995 M.A. in English and Computer Science, Free University of Berlin
1997 Dr. phil. in English Linguistics, Free University of Berlin
2002 post-doctoral degree (Habilitation) in English Linguistics, Free University of Berlin

Professional Appointments
1998—2001 Assistant Professor, Free University of Berlin
2001—2004 Full Professor (C3), University of Hamburg
2004— Professor and Chair of English Linguistics (C4), University of Hamburg
11/2014 Visiting Professor, National University of Singapore
02—09/2015 Visiting Professor, University of Calgary
08/2017 Visiting Professor, National University of Singapore
11/2017 Visiting Professor, Monash University Melbourne
09—10/2018 Visiting Professor, Macquarie University Sydney

Coordination of Research Units
2007—2009 Coordinator of the Knowledge Transfer Unit at the Collaborative Research Centre on Multilingualism (SFB 538), University of Hamburg
2008—2010 Coordinator of the Collaborative Research Centre on Multilingualism Sonderforschungsbereich 538, University of Hamburg
2009—2013 Coordinator of the Landesexzellenzcluster on Linguistic Diversity Management in Urban Areas (LiMA), University of Hamburg

Service to the Community
2017— Co-Editor-in-Chief, Journal of Language Contact, Leiden: Brill.
2019— Treasurer and Member of the Executive Board of the German Linguistic Society (DGfS)