His main role on the pitch is Goalkeeper. He measures 179cm in height and weighs 61kg. His stronger foot is Right. His estimated market valuation currently stands at 50K €.

His latest transfer saw him join FSV Zwickau from Hertha Zehlendorf via on 2025-06-30.

In the German Regionalliga 2025-2026, J. Kühn played 13 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.