Dan Tsui is a software engineer and founder of Kyokan, a Vancouver-based consultancy focused on blockchain engineering with 11 years of experience building product-grade systems. He blends front-end polish with deep protocol knowledge, contributing UI improvements to MetaMask and backend EVM logic and EIP150 gas fixes in the ethereumjs monorepo. Comfortable across software, product, and design, he ships user-facing features and low-level blockchain correctness fixes alike. Dan’s background in statistics informs a pragmatic, data-minded approach to engineering trade-offs and bug reduction. He frequently takes on client and hiring requests through Kyokan’s operations channel and prefers to keep LinkedIn activity minimal. His work shows a rare combination of UX sensibility and protocol-level rigor in open-source crypto projects.
Contributions:235 commits, 32 PRs, 35 pushes in 4 months
Contributions summary:Dan primarily worked on implementing and improving the user interface of the MetaMask browser extension. They redesigned a dropdown component, adding styling and functionality. The user also added tests for the new dropdown component and fixed click handlers. They also updated styles and functionality of the application's header and buy flow buttons.
Monorepo for the Ethereum VM TypeScript Implementation
Role in this project:
Backend Developer
Contributions:13 commits, 5 PRs, 9 comments in 15 days
Contributions summary:Dan primarily contributed to the core backend logic of the Ethereum Virtual Machine (EVM) implementation. Their work focused on modifying and improving the execution of transactions, specifically regarding gas costs and limits as per the EIP150 standard. The commits involved refactoring the code and adding comments for improved clarity. The user also addressed various bug fixes, which ensured proper calculations within the EVM implementation.
monorepoethereumjavascriptblockchainevm
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