Career
During his career he played for Real Estelí for whom he scored 62 goals in 16 years in Nicaragua, Atlético Indio in Honduras and Atlético Marte in El Salvador. He is considered one of the best central defenders to have played in and for Nicaragua. His final international was a March 1999 UNCAF Nations Cup match against El Salvador.
Olivas has managed Real Estelí since 2003, but was appointed national team manager for the 2009 UNCAF Nations Cup.