In 2004, Parral was appointed as a youth manager of Gibraltarian side Lion Gibraltar.
In 2012, he was appointed manager of the Gibraltar women's national football team.
He also worked as goalkeeper coach of the Gibraltar national football team.
He was regarded to have revived the club at the end of the 2021/22 season and make their style of play less defensive.
He founded the European Soccer Coaching Academy in the United States.