API3 was founded by three individuals with relevant experience in blockchain and software engineering:
Heikki Vänttinen - Previously the founder and CEO of CLC Group, a blockchain lab, and the CMO of Zippie, a mobile operating system for blockchain.
Burak Benligiray - Also previously worked at CLC Group as the CTO, and has written about the merits of ChainAPI, the integration platform for API3.
Saša Milić - A software engineer who has worked at Facebook and as a simulation data scientist, as well as a sessional lecturer at the University of Toronto.