Jaisim attended Madras Christian College School (1960 batch).
From 1966 to 1970, he worked with the architectural firm of LM Chitale & Son, Madras.
[1] In 1970, inspired by Ayn Rand's novel, The Fountainhead, he started an architecture practice under the name "Jaisim-Fountainhead".
The practice grew from 1970 to 1975, winning a National Competition for the Cochin Stadia, Presidents Nomination for the Small Industries Pavilion and the ‘TAJ Fisherman’s Cove’.
From 1975 to 1980, the firm began working overseas, and ventured into other areas of building, such as the import and distribution of building materials, running scheduled contracts, and running a stone crusher and fabrication unit.