Skip to content
View LazyBoneJC's full-sized avatar
⏳
Time flies...
⏳
Time flies...

Highlights

  • Pro

Block or report LazyBoneJC

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
LazyBoneJC/README.md

Hi there, I'm Jacky Chang 👋


⚡ Software Engineer | Backend & Distributed Systems

I engineer high-performance backend systems and scalable infrastructure.

With a reliability-first mindset, I bridge the gap between traditional backend architecture and decentralized protocols. My experience ranges from architecting high-throughput data pipelines (achieving a 400x performance boost) to auditing complex state logic in distributed finance systems.

I focus on building stable, fault-tolerant software that solves real-world complexity.


🚀 Featured Engineering Projects

🛠️ Distributed Asset Trading System (Neon Marketplace)
A full-stack trading platform architected for high availability and low-latency data retrieval.
  • High-Performance Indexer: Engineered a custom event indexer using Rust & PostgreSQL to replace standard polling, reducing data retrieval latency by 90%.
  • Infrastructure & DevOps: Deployed a containerized microservices architecture using Docker to ensure consistent environments across development and production.
  • Complex State Management: Implemented atomic transactions and compliant API integrations (KYC/AML) to handle secure asset transfers.
  • 🔴 Live Demo | 💻 View Code
🔍 Protocol Security & Logic Analysis (Lido Finance Audit)
Deep-dive analysis of complex distributed systems to identify critical logic failures.
  • Critical Vulnerability Discovery: Identified a functional deadlock (Critical severity) and arithmetic precision loss in a major DeFi protocol through rigorous code analysis.
  • System Stability: This work demonstrates my ability to understand, debug, and secure complex, high-stakes codebases beyond standard application logic.
⚡ High-Performance Web Application (NexusRPC)
A performance-obsessed landing application focusing on SEO and rendering efficiency.
  • Optimization: Built with Next.js 14 and Tailwind CSS, achieving a perfect 100/100 Lighthouse Performance score via code splitting and asset optimization.
  • 🔴 Live Demo | 💻 View Code

💻 Tech Stack

Domain Technologies
Backend Architecture Node.js, TypeScript, PostgreSQL, Redis, RabbitMQ, Docker, AWS (EC2)
Blockchain Engineering Solidity, Rust (Indexer), Foundry, Viem, Smart Contract Security
Frontend Ecosystem Next.js, React, Tailwind CSS
Tools & CI/CD Git, Linux CLI, Postman, System Monitoring

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 1

  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