Domenig-Ozimic debuted at the 2019 Junior World Championships in Moscow, where she ended 28th in teams,42nd with clubs final and 33rd with ribbon.[5]
In 2021 she became a senior, at the World Cup in Sofia she was 52nd in the All-Around, 54th with hoop, 46th with ball, 52nd with clubs and 52nd with ribbon.[6] In May she competed in Pesaro, ending 37th in the All-Around, 37th with hoop, 34th with ball, 32nd with clubs and 39th with ribbon.[7] Valentina was then selected for the European Championships in Varna along Nicol Ruprecht, she was 54th in the All-Around, 54th with hoop, 54th with ball, 60th with clubs and 64th with ribbon. She also participated in the World Championships in Kitakyushu, ending 53rd in the All-Around, 51st with hoop, 59th with ball, 48th with clubs and 61st with ribbon.[8]
The 2022 season started at the World Cup in Pesaro, she was 37th in the All-Around, 37th with hoop, 34th with ball, 32nd with clubs and 39th with ribbon.[9] She then took part in the European Championships in Tel Aviv, taking 51st place in the All-Around, 49th with hoop, 46th with ball, 58th with clubs and 62nd with ribbon.[10] In September Valentina competed at the World Championships in Sofia, finishing 54th in the All-Around, 57th with hoop, 53rd with ball, 51st with clubs and 64th with ribbon.[11][12]
Austria