Both his parents are doctors, and his mother, Prof. Dr. Alisa Wacharasindhu (née Vejjajiva), is the eldest sister of former prime minister and former Democrat Party leader Abhisit Vejjajiva and are ethnic Chinese of Hakka descent originating from the province of Chanthaburi with ancestral roots in Guangdong, China.

He received a Bachelor's degree in Philosophy, Politics and Economics (PPE), from St John's College, University of Oxford.

[7] After graduating from Oxford, Parit planned to work in Thai politics, however, the country was still under military rule.

[8] In 2018, Parit left his job at McKinsey and returned to Thailand to start his career in Thai politics.

He joined the Democrat Party and affirmed his desire to run for office to become a member of the House of Representatives.

While waiting for the military junta to declare elections, Parit hosted and co-produced a TV program "Hen Kub Ta" (เห็นกับตา; lit: "see with eyes") on PPTV HD, starting 4 May 2018.

On 26 December 2018, he was assigned to be a candidate in Bangkok's 13th constituency, consisting of Bang Kapi and Wang Thonglang (only Phlapphla) in the 2019 general election.