She is Professor of Discourse Studies at the Department of Linguistics and English Language of Lancaster University, United Kingdom.
After attending the Katharineum (secondary school), Koller received an MA in English language and literature (with minor in Arabic language and Islamic Studies) from the University of Vienna in 1998, and a Ph.D in English linguistics from the same university in 2003 with a thesis titled "Metaphor clusters in business media discourse:a social cognition approach.
"[2] Between 1999 and 2001, Koller was an external lecturer for Business English at the Polytechnic of Wiener Neustadt.
[3] Additionally, she also does occasional language consulting work for private, public and third sector clients.
Edited along with Susanne Kopf and Marlene Miglbauer, the book provides an insight into how discourse influenced the outcome of the 2016 United Kingdom European Union membership referendum.