Jonas harder is a 20-year-old professional football player from ITA. At the international level, he represents Italy U19. He plays primarily as a Midfield. He stands at 178cm tall and weighs 73kg. His preferred foot is Right. His current market value is estimated at 2M .

His most recent move was a Free from Fiorentina to FC Basel 1893 on 2026-07-13. The reported fee was 2M €.

Across 1 appearances in the Coppa Italia 2025-2026, Jonas harder registered 0 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.