His first major role was in the television show Just Mohabbat. This was the first serial targeting the college-going audience. It revolved around the character Jai, played by Sheth. It was about teenage years, the funny, sad, trying moments and emotions. The serial and his character both became very popular. It ran for four years on the Indian channel Sony. He did many modelling assignments apart from featuring in advertisements and music videos. He starred in a Pepsi commercial alongside Shah Rukh Khan. He made his acting film debut in 2004 thriller Taarzan: The Wonder Car.