Full Professor, University of Łódź, Vilnius Gediminas Technical University

Professor and Chair of Sociolinguistics, Leiden University Centre for Linguistics

University of North Carolina at Charlotte

Professor of English Linguistics, Universitat de València

School of Humanities, Languages & Social Science, Griffith University

Assistant Professor in Applied Linguistics, Payame Noor University

SOAS, university of London

The University of Queensland

Senior Lecturer of Teaching English as a Foreign Language, University of Valencia

Volgograd State University (ВолГУ).