He currently plays for Katwijk, wearing the number 1 shirt. He plays primarily as a Goalkeeper.

His most recent move was a from Katwijk to CWO Vlaardingen on 2025-07-01.

In the Netherlands Tweede Divisie 2024-2025, J. van Leeuwen played 26 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.