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LazyBoneJC/README.md

Hi there, I'm Yu-Wei Chang πŸ‘‹


⚑ Software Engineer | Backend & Web3 & Cloud Infrastructure

I specialize in building high-performance backend systems and diagnosing complex technical issues.

With a strong foundation in Node.js and System Architecture, I transitioned from optimizing legacy data pipelines (achieving a 400x speedup) to engineering robust distributed systems. My passion lies in troubleshootingβ€”whether it's debugging a race condition in a high-concurrency app or analyzing logs to identify root causes in cloud infrastructure.


πŸš€ Featured Projects

πŸ› οΈ High-Performance Distributed Trading Platform (Neon Marketplace)
A scalable asset trading platform featuring a Rust-based backend indexer and containerized deployment.
  • Backend Engineering: Engineered a custom event indexer using Rust & PostgreSQL to replace standard polling, reducing data retrieval latency by 90%.
  • System Architecture: Designed a high-availability architecture using Docker for seamless deployment and Next.js for the client side.
  • API Integration: Integrated Compliance APIs (KYC/AML) to handle secure, regulatory-compliant data transactions.
  • πŸ”΄ Live Demo | πŸ’» View Code
⚑ High-Performance Landing Page (NexusRPC)
A performance-obsessed web application designed for infrastructure providers, focusing on SEO and rendering efficiency.
  • Frontend Optimization: Built with Next.js 14 and Tailwind CSS, achieving a perfect 100/100 Lighthouse Performance score.
  • UX & Motion: Integrated Framer Motion for smooth interactive components while maintaining optimal First Contentful Paint (FCP).
  • πŸ”΄ Live Demo | πŸ’» View Code
πŸ” Technical Research & Troubleshooting (Security Audit)
I enjoy deep-diving into complex codebases to find logic flaws that automated tools miss.
  • Root Cause Analysis: Conducted a deep-dive audit on the Lido Protocol, successfully identifying a functional deadlock (Critical severity) and precision loss issues.
  • Documentation: Authored comprehensive technical reports detailing reproduction steps and remediation strategies.

πŸ’» Tech Stack

Domain Technologies
Backend & Cloud Node.js, Express, Python (Basic), PostgreSQL, Docker, AWS, RabbitMQ
Frontend Next.js, TypeScript, React, Tailwind CSS
Tools & DevOps Git, Linux CLI, Postman, Log Analysis
AI Workflow Cursor, Antigravity, Claude, Gemini
Blockchain Solidity, Foundry, Rindexer (Rust-based Indexer), Wagmi, Viem, RainbowKit

Pinned Loading

  1. Neon-Marketplace Neon-Marketplace Public

    A full-stack decentralized NFT marketplace built with Next.js, Solidity, Rindexer and RainbowKit. Features seamless minting, listing, and trading.

    Solidity

  2. DeFi_Stablecoin DeFi_Stablecoin Public

    A decentralized stablecoin system

    Solidity

  3. Bug_Bounty_Web3 Bug_Bounty_Web3 Public

    Documenting my journey into Web3 Bug Bounty

  4. NexusRPC NexusRPC Public

    Web3 Infrastructure Landing Page

    TypeScript