Jun Lee is a blockchain-focused engineering leader and founder with 11 years of experience building secure, production-grade crypto systems and developer tools. He has led engineering at market-leading firms (Haechi Labs, KODA) and now co-leads Fractalyze while heading R&D efforts at ShardLab, combining product delivery with experimental Web3 research. A hands-on developer fluent in Golang and Java, he’s driven high-impact projects like a non-custodial multisig wallet handling billions in volume and open-source blockchain engines (it-chain, koa). Beyond code, he coaches founders and teams (450+ coaching hours, CPCC) and runs leadership programs focused on inner leadership and embodiment, blending technical depth with people-first leadership. Based in Seoul, he’s actively building protocol tooling (protocol-camp) and intentionally bridges rigorous engineering, regulatory-grade crypto custody, and ecosystem education.
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