She won the gold medal in the women's club throw F32 event at the 2020 Summer Paralympics held in Tokyo, Japan.

Kozakowska competed in the women's long jump T38 event at the 2019 World Para Athletics Championships held in Dubai, United Arab Emirates.

In June 2021, she won the bronze medal in the women's shot put F32 event at the 2021 World Para Athletics European Championships held in Bydgoszcz, Poland.

The Ukrainian Anastasiia Moskalenko took the silver, Mounia Gasmi of Algeria had the bronze and Alia Issa, the first woman to represent the Refugee Paralympic Team, came eighth.

[2] At the 2024 Summer Paralympics she initially threw a World Record distance of 31.30m to claim Gold, but was disqualified for using improper equipment after a protest by the Brazilian delegation.