Guillem Jaime was born on January 6, 1999 in Torreforta, Tarragona. Coming from CDC Torreforta, he joined La Masia at U7 level and has gone through all of the Barça youth categories until reaching Barça B for the 2018/19 season. In his last campaign with the U19A side, he went back to his football beginnings, as a right winger. He has also played as a right-back in the other categories.
In 2017/18, he was the captain of the U19A team and was able to lift the Youth League and League titles. In his first season with Barça B he made a total of 25 appearances, 18 in the starting XI. He was included in the first team squad by coach Ernesto Valverde for the Copa del Rey game against Cultural Leonesa although he did not get the chance to make his debut.
Jaime left the Club at the end of the 2019/20 season for a spell with first Castellón and then Nàstic de Tarragona. In the summer of 2021 he returned to Barça B to form part of Sergi Barjuan's squad.
A right winger or right-back, Guillem Jaime is a virtuoso attacker with the ball at his feet. Goal scoring is another facet of his game.