Jaynti Kanani grew up in Gujarat, on the outskirts of Ahmedabad. His father worked in a diamond factory. The family had a modest income.
He studied engineering at Dharmsinh Desai University in Nadiad. He then worked as a software developer before moving into blockchain.
In 2017 he joined Sandeep Nailwal and Anurag Arjun to build Matic Network. The idea came from Ethereum congestion, which made apps slow and costly to use.
Matic Network launched in early 2018. In February 2021 it was renamed Polygon. Kanani is one of its three Indian co-founders.