He currently plays for RCD Espanyol Women, wearing the number 4 shirt. He plays primarily as a Defender.

Throughout the Liga Profesional de fútbol femenino 2025-2026, Amaia Martínez De la Peña featured in 9 matches, averaging 1.1 tackles, 1.6 interceptions, and 2.6 clearances per game, while blocking 0 shots per game.