🔐 Smart Contracts & Fullstack dApp Developer | 🌐 Based in Barcelona, Spain
I'm a Smart Contracts & Fullstack dApp Developer passionate about building secure and efficient smart contracts for real-world blockchain applications. With a strong foundation in Ethereum development and decentralized systems, I enjoy turning complex ideas into clean, well-structured code.
I'm currently focused on expanding my impact in the Web3 space, contributing to projects where I can grow, collaborate, and help shape the decentralized future.
- Languages: JavaScript, TypeScript, Solidity
- Frontend: React, Tailwind CSS
- Backend: Node.js, Express
- Blockchain: Ethereum, Ethers.js, Hardhat
- Tools: Git, GitHub, Postman, VS Code
A simulated decentralized wallet built using cryptographic signing (ECDSA).
Includes wallet generation, persistent balances with LowDB, secure transaction signing, and transaction history.
Tech: JavaScript, React, Ethereum-Cryptography, Node.js, Express, LowDB.
🔗 Live Frontend: https://ecdsa-wallet.vercel.app
🔗 Backend API: https://ecdsa-wallet-backend.onrender.com
A smart contract-based escrow service that allows safe transactions between two parties with a third-party arbiter.
Tech: JavaScript, Solidity, React, Node.js, Express, LowDB, Ethers.js, Hardhat.
🔗 Live Frontend: https://escrow-app-blue.vercel.app 🔗 Backend API: https://escrow-backend-nbkb.onrender.com
Both projects reflect my ability to:
- Work end-to-end (frontend + backend).
- Apply Solidity logic to real-world problems.
- Use digital signature verification (ECDSA) and cryptographic hashing.
- Implement persistent storage (LowDB) for user wallets and balances.
- Follow secure development principles.
- Fully migrate backend to a hosted database (e.g. MongoDB or Firebase)
- Add user authentication and encryption for localStorage
- Improve UI responsiveness and accessibility
- 🌐 Portfolio Website
- 🐱 GitHub
This project is open-source under the MIT License.