He currently plays for VfB Eichstatt, wearing the number 29 shirt. He plays primarily as a Defender. His current market value is estimated at 25K €.

His most recent move was a from VfB Eichstätt II to VfB Eichstatt on 2023-07-01.

Throughout the German Regionalliga 2025-2026, Johannes Mayer featured in 19 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.