 Brought up through the ranks of Sevilla FC, he played two La Liga matches with the first team in the 2004–05 season, and established himself as an important attacking player with the Andalusian club in the following two years, but almost exclusively as a substitute.In 2006–07, even after having scored a hat-trick against Levante UD in the league opener, and another three goals in the victorious campaign in the UEFA Cup, Kepa fell out of favour, and on 22 January 2007 he went on loan to West Ham United in the Premier League until the end of the campaign, with the option of a permanent transfer available; on his debut for the Hammers, eight days later, he netted in the 77th minute after only being on for 70 seconds with his first touch of the game against Liverpool.In July 2007, Kepa agreed to a four-year deal with first division's Getafe CF, with Sevilla retaining the option of repurchasing the player the next season or the one after that.