At the 2019 Romanian Junior Championships, Ceplinschi won silver medals on both vault and floor exercise, and she finished fourth in the all-around.

[4] At the 2020 Romanian Championships, Ceplinschi only competed on vault and uneven bars, and she finished fourth in both event finals.

[5] She competed at the 2020 Junior European Championships, and the Romanian team won the gold medal by more than ten points ahead of Ukraine and Hungary.

[6][7] Individually, Ceplinschi won the silver medal in the all-around and on the floor exercise, both behind her teammate Ana Bărbosu.

She was initially the first reserve for the floor exercise event final, but when Larisa Iordache withdrew due to health issues, Ceplinschi was added.