He is a member of Smash Club inHelsinki.[3] He won his first match at a junior Grand Slam in the boys' singles at the2024 US Open, before losing toMees Rottgering.[4][5] He reached the semi-finals of the boys' singles at the2025 Australian Open, where he lost to eventual winnerHenry Bernet.[6][7] With that run, he rose to fifth in the junior world rankings. Shortly afterwards, he was called into the FinlandDavis Cup team.[8]
He won the2025 French Open in the boys' doubles alongsideAlan Ważny of Poland, reaching the semi-finals after a straight sets win against Thijs Boogaard andIvan Ivanov, before beatingKeaton Hance andJack Kennedy of the United States in the semi-finals, and then another American pairing of Noah Johnston and Benjamin Willwerth in straight sets in the final.[9][10]