David enrolled at University of the Philippines in 1939 and took up civil engineering and graduated in 1946 and passed the board during the same year.
After graduating he worked as Teacher in Bataan and later a concrete inspector for Kuenzle and Streiff. David Consunji founded D.M. Consunji, Incorporated in 1954 and has become its Chairman since. In 1995, he established the DMCI Holdings, Incorporated to consolidate the businesses.
Consuji's death was announced on September 4, 2017. He was 95. His cause of death was not disclosed.