Email me • My Website • My Blog • Decks • Ebooks • Diagrams • Sponsor

A human smart contract instance deployed on earth chain.

My name is CJ, a developer who is interested and specialized in Rust, C++, TypeScript, Solidity, Go.

There are many things that I find interesting, but if picking those I focus on most, then it would be:

• 1️⃣ incrementally verifiable and private computation with ZK and MPC (Cryptography)
• 2️⃣ derivatives, quant trading with machine learning (ML)
• 3️⃣ parallel computing with software (Hadoop, Spark, Flink) and hardware (GPU/FPGA)
• 4️⃣ secure blockchain scaling with data-availability sampling (DAS)
• 5️⃣ programming language theory and virtual machine (PL, VM)

I graduated from SHU and obtained my Master degree in Réseaux et Télécommunications from UTT, France.
During my five-year stay in France, I led the RealTime Indoor Location System (RTLS) at @Ubudu.
Subsequently, I headed the Blockchain Development at @ParaSpace.
Currently, I'm working as a ZK Engineer at @QEDProtocol.

I was ranked #74 on wakatime leaderboard, you can find my current ranking by searching Cheng JIANG.

• Parallel : A decentralized lending & staking protocol built on top of the Polkadot ecosystem (Rust)
• ParaSpace : A cross-margin ERC20/ERC721 lending & trading & staking protocol (Solidity)
• Casbin RS : An authorization library that supports access control models like ACL, RBAC, ABAC in Rust (Rust)
• Plonky2.5 : A plonky2 verifier for plonky3 (Rust)
• L2-Core : L2O Reference Implementation for zkApps on Bitcoin (Rust)
• Diesel Adapter : Casbin adapter for mysql, postgres, sqlite based on Diesel (Rust)
• Sqlx Adapter : Casbin adapter for mysql, postgres, sqlite based on Sqlx (Rust)
• Json Rules Engine : Full featured json rules engine (Rust)
• Actix Elastic : An actix actor for elasticsearch v7 (Rust)
• D3 Vs : Vue Visualisation Package using d3.js and leaflet (VueJs, d3-js, Leaflet)
• Layout Grid : Layout grid system in VueJs (VueJs)
• ElsQuery : Full featured elasticsearch query generator (inspired by Kibana) (VueJs)