Prior to his appointment as Senior Minister of State, he served as Minister of State for National Development, Minister of State for Communications and Information and Minister of State in the Prime Minister's Office between 2020 and 2021.
He made his political debut in the 2020 general election when he joined a five-member PAP team contesting in East Coast GRC, and they won with 53.39% of the vote. Tan was appointed Minister of State shortly after being elected, and appointed to the Prime Minister's Office from 2020 to 2021. In 2022, Tan was promoted Senior Minister of State after a Cabinet reshuffle.
A computer engineer by profession, Tan had worked at the Ministry of Communications and Information, where he served as Deputy Secretary (Cyber and Technology)[4] and helped to develop the Intelligent Nation 2015 blueprint.[5] He was also the Chief Executive Officer of the Infocomm Media Development Authority (IMDA) from January 2017 to June 2020.[4][6] During his tenure, the IMDA awarded spectrum for the deployment of fifth-generation mobile networks[6] and established the SG Digital Office in May 2020.[6]
The party affiliation of each member is indicated right after the constituency/seat he or she represents. PAP: People's Action Party; WP: The Workers' Party; PSP: Progress Singapore Party All of the leaders of the respective GRCs are in underline. MP(s) who is go on a leave of absence is in italic. NMPs do not belong to any party.