He is affiliated as professor to the National University of Engineering and he teaches scientific and technological subjects at Centro de Preparación para la Ciencia y Tecnología (Ceprecyt).

[7] Between 1985 and 1986 he was guest scientist at (GSI) in Darmstadt in the group led by Peter Armbruster, dedicated to research on transuranides nuclei.

[8][9] At GSI published his work on Coulomb and shell effects in low energy fission.,[10][11] As guest scientist at the Institut de Physique Nucléaire, Orsay, in the Bernard Borderie's group, he participated in research on deeply inelastic collisions.

[12] He was also invited by the Carnegie-Mellon Institute in the Morton Kaplan group dedicated to ternary fragmentations in nuclear collisions.

[14][15][16] Montoya has had his opinions on science and technology published in a number of articles in the main Peruvian newspapers.