Prof. Deniz graduated from Hacettepe University School of Physical Therapy and Rehabilitation in 1991. 

She has received her Master of Science degree in 1995 from Exercise Physiology at Middle East Technical University Institute of Social Sciences and in 1997 from Physiotherapy and Rehabilitation at Hacettepe University Institute of Health Sciences. 

Then she completed her doctoral studies with a thesis entitled "A comparison of the effectiveness of noninvasive mechanical ventilation and noninvasive mechanical ventilation with chest physiotherapy in patients with respiratory failure" in 2002. 

She has worked as an observer at the King's College University Hospital, the St Thomas Hospital and the Royal Brompton Hospital in England in 2000, at the Maine Medical Center and at the Medical Center of Georgia in the U.S. in 2001. 

In 2001, she has received the "International Fellowship" award issued by the American Association for Respiratory Care.  

She also served as a full-time faculty member in Ohio State University Department of Respiratory Therapy in the U.S in 2003 - 2004 and in 2006, she has ​received the title of Associated Professor. 

She has taught as a faculty member in the Netherlands Saxion University  Department of Physiotherapy as part of the ERASMUS program in 2007. 

Up until today, she is continuing her works in the Cardiopulmonary Rehabilitation Unit connected to Hacettepe University Faculty of Health Sciences Department of Physiotherapy.