Dönmez is a member of Olimpik Club in her hometown.[1]
At the 2022 Grand Prix Golden Bear tournament held in Zagreb, Croatia, she competed in the breaststroke swimming events of 50 m (0:32.64), 100 m ( 1:11.42), 200 m (2:36.59) and won one gold and two silver medals in the open age category, as well as three gold medals in the junior category respectively.[1]
She competed at the 2025 Islamic Solidarity Games in Riyadh, Saudi Arabia,[2] and captured two gold medals in the 100 m breaststroke and 4 x 100 medley relay events,[3] as well as two silver medals in the breaststroke events of 50 m,[4] and 200 m.