Hire the Top 2% of
Freelance Blockchain Developers
in China

Bear W.

Blockchain developer in China (UTC+8)

Blockchain Engineer with a Bachelor's in Computer Science and over five years of experience in blockchain technology. Knowl-edgeable about Ethereum, including both Layer 1 and Layer 2, and the Polkadot platform. Enthusiastic about contributing to open-source projects and helping build the Web3 infrastructure. Skilled in English, both written and spoken, which allows for successful teamwork with people all over the world.

fjchen .

Blockchain developer in China (UTC+8)

My name is Fengjun Chen. I live in Shanghai, China. I get my master degree from Shanghai Jiao Tong University (the Top3 university in China) in 2019, majoring in CS with blockchain & security as research direction. I have published the paper _[Secure Scheme Against Compromised Hash in Proof-of-Work Blockchain](https://link.springer.com/chapter/10.1007/978-3-030-02744-5_1)_ on conference NSS 2018. I am competitive in the research of cryptography and cutting-edge blockchain techlonogy due to my academic experience. After leaving from campus, I joined [Cryptape](https://cryptape.com/#/home), an old-fashion blockchain company in China. I have participated in the design and development of toolchain and IBC-compatible cross-chain solution for CKB, a complete original PoW public blockchain. I am good at Rust, and also have work expeirnce in Golang, Java and Solidity. You can take a look at my public commits in repo [Mercury](https://github.com/nervosnetwork/mercury), [ckb-sdk-java](https://github.com/nervosnetwork/ckb-sdk-java), [ckb-sdk-go](https://github.com/nervosnetwork/ckb-sdk-go), [forcerelay](https://github.com/synapseweb3/forcerelay) and [ibc-solidity-contract](https://github.com/synapseweb3/ibc-solidity-contract).