Jijun Leng
Co-Founder at CodeNut
Palo Alto, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJijun Leng is a seasoned software engineer and entrepreneur with 13 years of experience building distributed systems, developer tools, and web3 applications from Palo Alto. As Co-Founder of CodeNut, he’s focused on democratizing web3 app building with an end-to-end vibecoding tool for EVM chains and Solana, blending product instincts from his startup years with deep engineering rigor. Previously he contributed to Aptos Labs’ TypeScript SDK, improving transaction signing and serialization for a prominent layer-1 blockchain, showing a knack for developer-facing infrastructure. His background spans major tech firms including Facebook and IBM and advanced training with an MS in Software Engineering from Carnegie Mellon. Comfortable across back-end systems, networking, and blockchain SDKs, he combines hands-on implementation skills with product sensitivity. Notably, he pairs entrepreneurial drive with low-level engineering experience—streamlining dependencies and performance in open-source tooling that developers rely on.
13 years of coding experience
16 years of employment as a software developer
BS Information Management and Information Systems, BS Information Management and Information Systems at Harbin Institute of TechnologyMS Software Engineering, MS Software Engineering at Carnegie Mellon University
node.js
Github Skills (10)
transaction10
typescript10
code-signing10
typescripts10
sdk10
signing10
blockchain10
typescript-types10
move8
smart-contracts7
Programming languages (9)
Github contributions (5)
aptos-labs/aptos-core
May 2022 - Jan 2023
Aptos is a layer 1 blockchain built to support the widespread use of blockchain through better technology and user experience.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:415 reviews, 180 commits, 212 PRs in 8 months
Contributions summary:Jijun's primary contributions revolve around implementing features and improvements within the TypeScript SDK for the Aptos blockchain. They focused on adding functionalities for signing and serializing transactions within the SDK, streamlining dependencies by removing unnecessary libraries, and improving the efficiency and usability of the code. The user's work directly impacts the tools developers use to interact with the Aptos blockchain, emphasizing transaction handling and blockchain interaction.
blockchain-platformblockchainuser-experienceblockchain-networksmart-contracts
jjleng/paka
Feb 2024 - Jul 2024
Fast-track AI apps to production with LLaMA 3, Mistral, and other top LLMs!
Contributions:15 releases, 8 reviews, 217 PRs in 4 months
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