Yi San Lee is a product leader and multidisciplinary engineer with 16 years’ experience building data-driven, user-centric products across Web3, telco, and AI domains. Based in Shenzhen with Singapore roots, he has led product teams at Crypto.com—launching market data platforms and wallet features used by millions—and now drives product at a stealth startup. He pairs product strategy and experimentation with deep hands-on backend and DevOps contributions to open-source blockchain projects such as Ethermint, Cosmos SDK, Cronos and CosmWasm, showing expertise in EVM integration, state trees and smart contract standards. Yi’s engineering pedigree spans Rust, Go and Nix-based build systems (notably contributions to tendermint-rs and poetry2nix), reflecting his “fp lover” and blockchain-engineer persona from GitHub. He combines academic training from Georgia Tech and NTU with practical experience shipping secure, compliant systems (fraud prevention, travel rule) at scale. Uncommonly, he moves fluidly between product leadership and core protocol work, enabling him to translate low-level technical constraints into clear product trade-offs.
16 years of coding experience
10 years of employment as a software developer
Master of Business Administration - MBA Business Administration and Management General, Master of Business Administration - MBA Business Administration and Management General at Quantic School of Business and Technology
GCE A Level Physics Chemistry Mathematics and Economics, GCE A Level Physics Chemistry Mathematics and Economics at Innova Junior College
ICT, ICT at KTH Royal Institute of Technology
Bachelor of Engineering (B.Eng.) Electrical & Electronics Engineering, Bachelor of Engineering (B.Eng.) Electrical & Electronics Engineering at Nanyang Technological University Singapore
Master of Science (MSc) Electrical and Computer Engineering, Master of Science (MSc) Electrical and Computer Engineering at Georgia Institute of Technology
Cronos is the first Ethereum-compatible blockchain network built on Cosmos SDK technology. Cronos aims to massively scale the DeFi, GameFi, and overall Web3 user community by providing builders with the ability to instantly port apps and crypto assets from other chains while benefiting from low transaction fees, high throughput, and fast finality.
Role in this project:
Back-end Developer
Contributions:2 releases, 2010 reviews, 249 commits in 1 year 6 months
Contributions summary:Yi implemented core functionality for the Ethereum Virtual Machine (EVM) compatibility within the Cronos blockchain, including the addition of the EVM module to the application and the incorporation of related keepers. They integrated the Ethermint library, which provides EVM support for Cosmos SDK-based blockchains. These changes involved modifying the app's core structure (app.go) and dependency management (go.mod) to support EVM transactions.
Cronos POS Chain⛓: Croeseid Testnet and beyond development
Role in this project:
Back-end Developer
Contributions:473 reviews, 139 commits, 243 PRs in 2 years 2 months
Contributions summary:Yi's contributions primarily revolve around the development and maintenance of the Cronos POS Chain. They fixed denomination issues, configured bonding parameters, and addressed bugs within the Starport framework. Furthermore, the user worked on migrating the codebase to a Stargate scaffold, porting fixes and enhancements to the command line interface. They also contributed to setting up and maintaining the infrastructure for integration tests.
golangcrocosmos-sdkblockchaincrypto
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