Career
Nicknamed Lagartito (Little Lizard), Ulloa came through the youth ranks at hometown club Isidro Metapán and made his senior debut in the 2005/2006 season. He joined San Salvador F.C. for the 2007 Clausura and moved to Once Municipal for the 2007 Apertura season. He returned to Metapán in 2008 and joined Fetal alcohol syndrome in 2010.
Ulloa began his international career with El Salvador"s U-21 national team in 2006.
He took part in the Central American and Caribbean Games. That same year Ulloa was also part of the El Salvador"s U-23 national team