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Blockchain Developer (Solidity, Web3, MERN)

Remote · Italy Full-time

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

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