In 2019, Sofiia won a gold medal in the 200 metres surface and a bronze in the 100 metres surface at the World Junior Championships in Sharm El Sheikh.[4]
She competed at the 2021 Finswimming World Championships in Tomsk, winning two silver medals in the 4x100 and 4x200 metres surface relay and a bronze one in the 400 metres surface.[5][6]
In 2022, at the World Championships in Cali, Sofiia became a three times world champion in the 4x200 metres surface relay and the 400 and 800 metres surface. She also won a silver medal in the 200 metres surface.[7][8] Later, she won a gold medal in the 200 metres surface and a silver one in the 400 metres surface at the 2022 World Games in Birmingham.[9]
At the 2024 Finswimming World Championships in Budapest Sofiia won two silver medals in the 4x200 metres surface relay and the 400 metres surface. She also won two bronze ones in the 4x100 metres surface relay and the 200 metres surface.[10]
