Grimm competed initially in women's singles figure skating, twice standing on the German national novice podium with bronze in 2018 and silver in 2019.

[1] However, by the end of the 2018–19 season, she found herself losing interest in the discipline, later saying "I didn't really have the feeling for singles anymore and girls started doing quads.

They began training in Oberstdorf, coached by former Soviet ice dancers Rostislav Sinicyn and Natalia Karamysheva.

They went on to place fourth at both the Ice Challenge and the Egna Dance Trophy, and won the German junior national title.

As a result of the invasion, the International Skating Union banned all Russian and Belarusian athletes from participating in competitions, which had a significant impact on the junior dance field.

[8] At their second event in Gdańsk, they took the silver medal behind reigning World bronze medalists Bashynska/Beaumont, despite Grimm falling in the free dance.

"[14] Grimm and Savitskiy encountered difficulties in the leadup to the beginning of the Junior Grand Prix, with him falling ill shortly before the 2023 JGP Austria.

Shortly prior to departing for the event in Gdańsk, Savitskiy cut his hand in practice, impeding their performance ability.

"[19] In late August, it was announced that due to disagreements Grimm/Savitskiy had left coaches, Rostislav Sinicyn and Natalia Karamysheva, to train under Martin Skotnický.

[22] While preparing for their second Junior Grand Prix event, Grimm/Savitskiy moved from Oberstdorf to Egna, Italy, where Matteo Zanni, Barbora Řezníčková and Katharina Müller became their new coaches.

They then went on to win their fourth consecutive national title at the 2025 German Junior Championships two weeks following the aforementioned event.