
Experienced Web3 & Blockchain Developers (React, Solidity, Ethers.js, web3.js)
Upwork
Remote
•2 hours ago
•No application
About
We're seeking senior Web3 developers to finalize an investor's dApp project. The ideal candidates will have a solid understanding of blockchain technologies and dApp architecture Responsibilities: • Build and maintain frontend interfaces (React, Web3.js/Ethers.js) • Develop backend services and APIs to support blockchain interaction • Optimize dApp performance, usability, and security • Stay up-to-date with DeFi, NFTs, DAOs, Layer 2 solutions, and scaling technologies Requirements: • Strong experience with Solidity, Hardhat/Truffle, and Ethereum-compatible chains (Polygon, Arbitrum, BNB, etc) • Proficiency in JavaScript, React • Experience with Web3.js, Ethers.js, or similar libraries • Understanding of backend development (Node.js, Express, or similar) • Knowledge of databases (MongoDB, PostgreSQL, Firebase) • Familiarity with IPFS, Graph, or other decentralized storage/indexing solutions • Knowledge of security best practices in Web3 development Looking forward to meeting the best talents