He currently plays for RFC de Liege, wearing the number 25 shirt. He plays primarily as a Defender. His preferred foot is Left. His current market value is estimated at 250K €.

His most recent move was a Free from KAS Eupen to RFC de Liege on 2016-02-01.

Throughout the Belgian Challenger Pro League 2025-2026, J.D'Ostillio featured in 21 matches, averaging 1.5 tackles, 1 interceptions, and 2.8 clearances per game, while blocking 0 shots per game.