[11] She then had her biggest competition so far in Glasgow, Scotland at the 2018 European Championships with teammates Ioana Stănciulescu, Daniela Trică, Antonia Duta and Ana Maria Puiu.

There, she also won the team competition for CS Farul Constanta with Ioana Stanciulescu and Maria Holbura, vault, floor and the bronze for the uneven bars.

[14] Sfiringu's first competition of the year was the 2019 FIT Challenge in Ghent, Belgium where she won gold with the junior team and silver with the seniors led by Denisa Golgotă.

[16] In June at the 2019 Junior World Artistic Gymnastics Championships in Győr, Hungary, Sfiringu and her team (Ioana Stănciulescu and Antonia Duță) finished 4th despite having a total of 6 falls.

[17] At the 2019 European Youth Summer Olympic Festival Sfiringu qualified to all apparatus finals except uneven bars, where she had a fall in qualification.

In this meet she won silver with her team (behind Russia) and on balance beam (behind Ondine Achampong of Great Britain), as well as getting the bronze medal on vault and floor exercise.

[19] In 2020, Sfiringu and teammates Antonia Duță, Daniela Trică and Ioana Stănciulescu turned senior, but due to the COVID-19 outbreak they were unable to compete early in the year.

[20] In May the FRG announced that Sfiringu, Ioana Stănciulescu and Maria Holbura moved to Izvorani to train with Liliana Cosma and Nicolae Forminte.

[22] In December, Sfiringu was announced as a member of the Romanian team for the 2020 European Women's Artistic Gymnastics Championships with Antonia Duță, Daniela Trică, Ioana Stănciulescu and Larisa Iordache.

[25] Silviana 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.

In April, after 1 year and 5 months of multiple injuries (cervical, ankle and COVID), Silviana Sfiringu competed at the 2022 Jesolo Trophy.