Youcai Qian
Co Founder at ETHFANS
Shanghai, Shanghai, China
Summary
👤
Senior🎓
Top SchoolYoucai Qian is a seasoned blockchain engineer and entrepreneur with 16 years of software development experience, co-founding multiple ventures including the open-source Peatio exchange and the Ethereum community hub ETHFANS. He blends deep back-end system expertise—evident from performance and account-engine improvements on Peatio—with hands-on smart contract development and testing for projects like RANDAO, where he optimized gas costs and implemented core RNG logic. Based in Shanghai, he has a strong Ruby and Solidity pedigree plus a history of shipping full-stack products, from social-commerce tooling to production exchanges. Known for refactoring core system features and improving matching engine performance, he pairs pragmatic engineering with decentralization advocacy to drive usable blockchain infrastructure.
16 years of coding experience
9 years of employment as a software developer
BS, Computer Science, BS, Computer Science at Nanjing University
English
Github Skills (15)
ruby10
activerecord10
truffle10
contract10
ruby-rails10
rails10
solidity10
web3js10
back-end-development10
ethereum10
testing10
blockchain9
javascript8
database-design8
redis8
Programming languages (6)
Github contributions (5)
hpyhacking/peatio
Mar 2014 - Aug 2014
An open-source assets exchange.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:154 commits in 5 months
Contributions summary:Youcai primarily contributed to the back-end logic of the exchange platform. Their commits focused on refactoring and improving account-related functionalities, including examining and managing account versions. They also defined states and events for the withdrawal process, enhanced admin pages, and addressed bug fixes, indicating a focus on core system features. Further commits indicate involvement in improving the performance of the matching engine.
ethereumassetscryptocurrencyexchange
randao/randao
Apr 2015 - Nov 2016
RANDAO: A DAO working as RNG of Ethereum
Role in this project:Full-stack Developer (focus on Solidity and testing)
Full-stack Developer (focus on Solidity and testing)Contributions:32 commits, 4 PRs, 28 pushes in 1 year 7 months
Contributions summary:Youcai primarily focused on developing and testing smart contracts for the RANDAO project, which is a DAO working as RNG of Ethereum. They initiated the project and implemented core functionalities, including commit, reveal, and random number generation. The user also introduced testing frameworks and wrote test cases to ensure the contract's reliability. Additionally, they refactored and optimized the code, including gas cost improvements.
daoethereumrngcontract
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