Yılmaz made her senior debut at the Cottbus World Cup in Germany, placing seventh in the floor final. In April, Yılmaz competed at the 2015 European Championships and placed 49th all-around during qualifications. At the Varna World Cup, she placed ninth on vault, fifth on beam and sixth on floor. Yılmaz represented Turkey at the 2015 European Games in Baku and finished 13th in the all-around final. She competed at the 2015 World Championships in Glasgow but did not make any finals.