Before entering politics, Faishal was an associate professor at the National University of Singapore's Department of Real Estate. He made his political debut in the 2006 general election as part of a six-member PAP team contesting in Marine Parade GRC and they won by an uncontested walkover. Faishal thus became a Member of Parliament representing the Kaki Bukit ward of Marine Parade GRC. During the 2011 general election onwards, he joined the PAP team contesting in Nee Soon GRC and they had won every general election since then. In 2012, he was appointed Parliamentary Secretary and had since risen through the ranks to become a Minister of State in 2020.