He currently plays for Club Guaraní, wearing the number 19 shirt. He plays primarily as a Defender. He stands at 179cm tall and weighs 72kg. His current market value is estimated at 325K €.

His most recent move was a Loan from Club Sportivo 2 de Mayo to Club Guaraní on 2025-12-31.

Throughout the Paraguayan Primera Division 2026, César Gregorio Ramírez Perdesen featured in 7 matches, averaging 0.4 tackles, 0.6 interceptions, and 1 clearances per game, while blocking 0 shots per game.