He is a member of Smash Club in Helsinki.[3] He won his first match at a junior Grand Slam in the boys' singles at the 2024 US Open, before losing to Mees Rottgering.[4][5] He reached the semi-finals of the boys' singles at the 2025 Australian Open, where he lost to eventual winner Henry Bernet.[6][7] With that run, he rose to fifth in the junior world rankings. Shortly afterwards, he was called into the Finland Davis Cup team.[8]
He won the 2025 French Open in the boys' doubles alongside Alan Ważny of Poland, reaching the semi-finals after a straight sets win against Thijs Boogaard and Ivan Ivanov, before beating Keaton Hance and Jack 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]