At 15 years old, he had his first job at Media Asia Films in Hong Kong where he was an assistant to actor Jackie Chan.

Kothari led the merger of Housing.com with News Corp's PropTiger[12] to create the US$350 million industry leader.

In 2019, there were media reports that stated Jason was among the candidates shortlisted by SoftBank for the global CEO position of WeWork, the American office-sharing company.

[23][24] Sony Pictures released the movie ‘Bloodshot’ starring Vin Diesel,[25] where Kothari is an Executive Producer,[26] worldwide on March 13, 2020.

[28] Irrationally Passionate is an entrepreneurial memoir that shares his turnaround story and learnings across geographies, industries and companies.