Hiroyuki Hara
CTO at Dev Null AG
Tokyo, Japan
Summary
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SeniorHiroyuki Hara is a CTO and seasoned technology leader based in Tokyo with a decade of experience building scalable, future-proof systems and developer communities. He currently leads FRAME00’s engineering efforts on Lemma, a cryptographic trust layer that uses zero-knowledge proofs, BBS+ signatures, and on-chain settlement to provide verifiable provenance for autonomous AI agent transactions. Previously he rebuilt large-scale web platforms and migrated monolithic stacks to serverless architectures, and he continues to favor functional programming, immutability, and "10-year" architecture conventions. Hiroyuki combines hands-on protocol design (x402, MCP, Trust402/EIP-3009) with product delivery—overseeing reference implementations for agentic payments on Base Sepolia. He also helps grow Dev Protocol’s DAO infrastructure and has a track record of founding and leading open-source communities in Japan. Colleagues can expect a pragmatic engineer who thinks cryptographically about trust and privacy while shipping production systems.
10 years of coding experience
3 years of employment as a software developer
Github Skills (167)
web-application10
optimistic10
creator10
cryptocurrency10
shadow-dom10
smart-contracts10
crypto10
wallet10
javascript10
middleware10
solidity10
architecture10
browser10
lit10
sdk10
Programming languages (12)
Github contributions (5)
frame00/oo-elements
Jan 2018 - May 2018
Contributions:36 releases, 638 commits, 59 PRs in 4 months
webcomponentsweb-components
aggre/try-now
Dec 2016 - Sep 2019
Contributions:8 commits, 4 pushes, 1 branch in 2 years 9 months
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