 Dy-Liacco was born in Naga City, Camarines Sur, Philippines in November 1920.From 1947–1949, he served as Head of the Design Section of the Distribution Engineering at the Taiwan Power Company in Taipei, Taiwan.After that, he returned to the Philippines and took the post of Chief Electrical Engineer at Bicol Electric Company and at the same time, served as lecturer in Mathematics at the University of Nueva Caceres, both in Naga City, from 1949–1953.