Jariwala is son of veteran Gujarati actress Leela Jariwala (a contemporary of Dina Pathak). He has acted in films as well as on Indian television. One of his most remembered Gujarati TV serials is Narsinh Mehta, the saint poet and devotee of Krishna. His role of Mahatma Gandhi in the 2007 film Gandhi, My Father put him on the international map.
His Gujarati plays include Hatheli Par Baat Baaki, Patro Mitro, Mulraj Mansion and Andhalo Pato. He acted in a Hindi play Uncle Samjha Karo and in English theatre Going Solo 2. He has acted in Hindi films like Honeymoon Travels Pvt Ltd, Guru, and Aap Ka Suroor.
Feroz Abbas Khan (director of Gandhi, My Father and a veteran theatre personality) had approached him for Gandhi's role in his famous play Mahatma v/s Gandhi. But due to date problems, the actor had to let go of the project. However, Feroz was bent on casting him as Gandhi and again approached him for Gandhi, My Father, which finally materialized.
In 1980 he married Indian television personality Apara Mehta with whom he has one daughter. They had another marriage together in 1981 again when their parents decided to do the marriage in grand scale. They have been living separately for long time due to the personal differences but they are not officially divorced.