Billian is a lecturer with a demonstrated history of working in the Higher Education sector, including its administration. She is skilled in research, data analysis, and review of academic articles, with a Doctor of Philosophy in English Linguistics from the University of Bayreuth, Germany. In 2019, she completed her Postdoctoral Fellowship as a collaborative research of Moi University – Kenya, and Radboud University and Leiden University - The Netherlands.

Billian has attended and presented papers at several scholarly international conferences, workshops and seminars in various countries including Kenya, Germany, Morocco, Rwanda, Spain, and The Netherlands among others. Her main research interests veer toward linguistics, where she has several publications.