[6] She then had her biggest competition so far in Glasgow, Scotland at the 2018 European Championships with teammates Silviana Sfiringu, Daniela Trică, Antonia Duță, and Ana Maria Puiu.

Her first competition was the 2019 FIT Challenge in Ghent, Belgium where she won gold with the junior team and silver with the seniors led by Golgotă.

[10] In June at the 2019 Junior World Artistic Gymnastics Championships in Győr, Hungary, Stănciulescu and her teammates (Sfiringu and Duță) finished 4th despite having a total of six falls.

In May the FRG announced that Stănciulescu, Sfiringu, and Maria Holbură were moving to Izvorani, Romania to train with Liliana Cosma and Nicolae Forminte.

[14] In December Stănciulescu was selected to represent Romania at the European Championships alongside Duță, Sfiringu, Trică, and Larisa Iordache.

During the team final, Stănciulescu fell twice on uneven bars to earn a 9.800, Romania's lowest score that day.

[15] Ioana was selected to compete at the 2021 European Championships where she would have a chance to qualify herself a nominative berth to the 2020 Olympic Games.

Duță and Stănciulescu decided to train in Bucharest with Iordache and Holbură (with coaches Lulu and Cristian Moldovan).