Known for his body of literary works composed of short stories, novellas, travelogues, screenplays, essays, columns and children's books, Zacharia is a distinguished fellow of Kerala Sahitya Akademi.

Returning to his home state, Zacharia joined St. Dominic's College, Kanjirappally in 1967 as a lecturer and stayed there until his move to Coimbatore in 1971 to take up the position of the area manager of Ruby Tyre and Rubber Works, Bengaluru.

There, he also co-hosted a show, Patravisesham, the first television program review, along with a senior journalist, B. R. P. Bhaskar,[4] which ran for 7 years.

[5] Zacharia has been compared to Jorge Luis Borges as he has limited his creative writing to short stories and novellas.

A keen traveller, Zacharia has published travelogues on Africa, England, Saudi Arabia, and China, as well as the Kumbh Mela.