Free-lance composer. (Symphonic, chamber, electro-acoustical and mixed music). 1976-present.

Composer-in-Residence.
Department of Arts and Sciences, Spalding University, Louisville, 1997-2002.

Visiting Composer-in-Residence.
School of Music, University of Louisville, 1994-1997.

Researcher and project director.
Implicit System in Shuar Music. Research for the National Conservatory of Music, Quito, Ecuador, sponsored by UNESCO, 1985-1994.

Researcher and composer.
Piel Negra sobre la Cordillera (Black Skin on the Highlands). Research and score on Afro-Ecuadorean music.
Slide-show soundtrack for the Congress of Black Cultures in Panamá, 1978.

Member of the Carlos Bonilla guitar trio. (Classical and popular guitar), 1969-1978.

Solo and duo guitar appearances at different venues in Europe, Ecuador, and USA, since 1969.

Professor of Music: Composition, Analysis, Orchestration and Computer Applications. Department of Research, Composition, and Musical Outreach -DIC, National Conservatory of Music, Quito, 1985-1994.

Academic Director at the School of Music / Conductor of the Youth Symphony Orchestra.
National Symphony Orchestra of Ecuador, 1985-1988.

Professor of Classical Guitar and Music Theory.
National Conservatory of Music, Quito, 1972-1980 (Chair, 1978-80).

Master classes to composition students: Freiburg, Bogotá, Quito, 1997-2003.

Teacher of musical education and fine art at the Intisana Middle and High School, Quito, 1969-1972.

Artistic advisor and advocate. Ecuadorean Festival of Contemporary Music. 2000-present.

Founder and Artistic Director.
Ecuadorean Festival of Contemporary Music, 1987-1994.

Founder and Artistic Director.
Música de Nuestro Tiempo (chamber music series), Ecuador, 1987-1994.

Project Designer and Artistic Director.
Project of Research, Composition and Musical Outreach. National Conservatory of Music. Quito, Ecuador, 1985-1994.