In 2020, Justin Castillo graduated from the Costa Rica Institute of Technology with a Bachelor of Engineering. 
In May 2021, Justin Castillo joined the IQ.wiki team as a Blockchain Developer. He worked directly with IQ.wiki's Chief Technology Officer Cesar Rodriguez and the BrainDAO engineering team on building the new IQ.wiki platform. He also worked on building HiIQ, the IQ token's staking system. 
He previously worked as a blockchain application developer for EOS Costa Rica and has worked on projects including Lifebank, a decentralized application that encourages people to donate blood. He also worked on gGoods, a project that used and modified the open source Dgoods standard to provide a NFT platform that helps non-profit organizations fundraise. The innovative project won second place in Block.one’s EOSIO Beyond Blockchain Hackathon.
As a full-stack blockchain developer, Justin Castillo has worked with a wide range of technologies ranging from React.js for the front end to the development of smart contracts on blockchains such as Ethereum and EOS.
Prior to working in blockchain development, Castillo worked as a full-stack engineer and mobile developer in the education industry.
Justin is passionate about building up the blockchain community in Costa Rica, in his spare time he hosts workshops and meetups to educate people about the space.