Dubinina made her senior international debut for Serbia at the CS Lombardia Trophy in September 2016. Coached by Svetlana Sokolovskaia at CSKA Moscow, she placed 29th in the short program at the 2017 European Championships in Ostrava, Czech Republic. She also missed qualifying for the free skate at the 2018 European Championships in Moscow, Russia, and at the 2018 World Championships in Milan, Italy.