After playing two years with the Boston Bulldogs of A-League, Renderos signed with Isidro Metapán in 2001, in a squad which also featured the likes of veterans Carlos Castro Borja, Adolfo Menéndez and Guillermo Rivera.
Iraheta continues with the team for the Apertura 2015 tournament, and the results started well for UES after a 1–1 away draw against Alianza, but a 1–2 home defeat against Pasaquina in the Estadio Jorge "Mágico" González began a run of bad results that ended in the resigned of Iraheta after a 0–2 defeat against Sonsonate in the Estadio Anna Mercedes Campos, after 9 games, being replaced by Efraín Burgos.
Iraheta was fired from Chalatenango in the Clausura 2018 tournament (in the middle of an institutional and economic crisis) after a 2–3 defeat against Isidro Metapán, being replaced by Giovanni Portillo.
During the effort to qualify for the 1998 FIFA World Cup, in which El Salvador narrowly missed out, Renderos was a frequent starter in the forward line or on the left of midfield.
Renderos made his debut for El Salvador in an April 1991 UNCAF Nations Cup match against Nicaragua and has earned a total of 57 caps, scoring 5 goals.