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yulppuma/README.md

Hi, I'm Yul Puma 👋

Smart Contract Engineer | DeFi | Solidity

Building secure decentralized systems, DeFi protocols, and oracle-powered smart contracts.

📍 Los Angeles, CA
LinkedIn • GitHub • Email

🚀 About Me

  • 🔗 Smart Contract Engineer specializing in DeFi protocols and oracle integrations
  • 🔐 Focused on secure Solidity architecture
  • ⚙️ Experienced with ERC standards, staking systems, and automation
  • 🧠 Strong background in distributed systems and backend engineering
  • 🛠 Building production-ready blockchain infrastructure

🧰 Tech Stack

Smart Contract Development

Solidity Hardhat Foundry OpenZeppelin

Blockchain Infrastructure

Chainlink Ethereum Ethers.js MetaMask

Frontend & dApp Development

React TailwindCSS Vite Wagmi RainbowKit

Languages

JavaScript TypeScript SQL Java

🧠 Smart Contract Engineering

I design and implement:

  • ERC-20 token systems
  • ERC-721 NFT contracts
  • ERC-1155 multi-token systems
  • Merkle proof airdrops
  • Commit-reveal randomness
  • NFT staking reward mechanisms
  • Chainlink oracle integrations
  • Chainlink automation / keeper systems
  • Security hardened contracts using:
    • ReentrancyGuard
    • Access control patterns
    • Fuzz & unit testing

🌟 Featured Projects

🧠 NeuroLedger

DeFi lending protocol integrating borrower eligibility, CRE risk management, and on-chain enforcement.

Highlights

  • Built Chainlink CRE infrastructure
  • Developed automation scripts for onboarding
  • Verified contracts via Etherscan & Remix

🔗 https://www.neuroledgers.com

🔎 MyScan

Oracle monitoring system detecting stale data feeds.

Highlights

  • Chainlink Price Feed oracle integration
  • Keeper-compatible smart contract automation
  • Transaction monitoring for ETH & ERC20

🔗 https://myscan-alpha.vercel.app

🎵 DappMyMusic

Decentralized music blog dApp with Spotify OAuth integration.

Highlights

  • Solidity smart contracts deployed on Sepolia
  • Spotify PKCE OAuth integration
  • React + Tailwind front-end

🔗 https://dappmymusic.vercel.app

📊 GitHub Stats

📈 Most Used Languages

📫 Contact

📧 yulppuma@gmail.com
💼 LinkedIn
🌐 GitHub

Pinned Loading

  1. metana-bootcamp metana-bootcamp Public

    Solidity

  2. Cortex-XYZ/monad-mip-lab Cortex-XYZ/monad-mip-lab Public

    MIP exploration lab

    TypeScript 1 1

  3. hashimh399/zk-private-nl hashimh399/zk-private-nl Public

    JavaScript 1 1

  4. sendmecash sendmecash Public

    JavaScript

  5. dappmeup dappmeup Public

    JavaScript

  6. security-reviews security-reviews Public