Wittet arrived in India in 1904 and became an assistant to John Begg, then Consulting Architect to Bombay. The two men were responsible for the evolution and subsequent popularity of the Indo-Saracenic Style of architecture.
On May 12th, 1917, Wittet, by then Consulting Architect to the Government of Bombay, was unanimously elected as the first President of The Indian Institute of Architects.