[2] Nitaya debuted in international competitions in 2013 at the Gardena Spring Trophy, winning silver in the junior ladies category.

In the 2014–15 season, Nitaya debuted on the ISU Junior Grand Prix (JGP) circuit, winning silver in Courchevel, France.

Concluding her season, she won her first senior international medal – gold at the Gardena Spring Trophy.

Competing in the 2015–16 JGP series, Nitaya finished fourth in Bratislava, Slovakia and won the bronze medal in Toruń, Poland.

In February 2017, Nitaya received the silver medal at the 2017 Winter Universiade in Almaty, Kazakhstan.