He plays primarily as a Defender. His preferred foot is Left. His current market value is estimated at 75K €.

His most recent move was a Loan from Nocerina to Benevento on 2026-06-29.

Throughout the Italian Serie C 2025-2026, Giovanni castaldi featured in 21 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.