He started his career aged 15 in Espanyol Barcelona's second team. With 19 he signed a professional contract and was loaned to the then Segunda División club UD Almería. He returned to Espanyol for the 2006/07 season. Soriano was loaned out again for the second half of the season to Polideportivo Ejido. He spent the 2007/2008 season again at Espanyol and was used regularly for the first time. The first half of the following season he played for Espanyol.In the second half of the season he was on loan for Albacete Balompié.