Blockchain Developer (Solidity + Web3 + MERN Stack)

15,000
ETH, DAI, USDT
+53
49 days (till Jul 23rd, 2026)

We are looking for an experienced Blockchain Developer to join our development team and work on decentralized applications (DApps) and smart contract-based systems. 

You will be responsible for building and integrating blockchain-based features into modern web applications using Solidity, Web3 technologies, and MERN stack (React, Node.js, Express, MongoDB). 

 

 🚀 Responsibilities 

- Develop and deploy smart contracts using Solidity 

- Build and maintain Web3 integrations (ethers.js / wagmi / web3.js) 

- Implement wallet connection (MetaMask and similar wallets) 

- Develop responsive frontend interfaces using React + TailwindCSS 

- Work with backend APIs using Node.js / Express 

- Integrate blockchain data with backend systems when needed 

- Ensure security, efficiency, and scalability of smart contracts 

- Collaborate with UI/UX and backend developers  

 

🧩 Required Skills 

- Strong experience in Solidity smart contract development 

- Experience with Web3 libraries (ethers.js, wagmi, or web3.js) 

- Solid understanding of Ethereum / EVM ecosystem 

- Experience with React.js and TailwindCSS 

- Knowledge of Node.js, Express, MongoDB (MERN stack) 

- Experience with wallet integrations (MetaMask, WalletConnect) 

- Understanding of smart contract security best practices  

 

💡 Nice to Have 

- Experience with Hardhat or Foundry 

- Knowledge of DeFi, NFTs, or staking systems 

- Experience deploying to testnets (Sepolia, Polygon, etc.) 

- Familiarity with TypeScript 

- Experience with CI/CD for smart contracts

15,000
ETH, DAI, USDT
+53
49 days (till Jul 23rd, 2026)

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