← Missions

Lead Blockchain Developer (Long Term)

Budget: $80.0 - $100.0 HOURLY / FULL_TIME ⭐ 0.00 (0) Ukraine

blockchain, solidity

We're building an innovative decentralized platform and seeking a Lead Blockchain Developer to take ownership of our smart contract architecture, NFT minting, marketplace logic, and wallet integration. Key Responsibilities - Architect, develop, test, and deploy Solidity smart contracts on EVM-compatible blockchains. - Build and customize ERC-721 and ERC-1155 NFT contracts, including logic for ownership verification and reward distribution. - Seamlessly connect smart contracts with our Node.js/Express backend and React/Next.js frontend using Web3.js or Ethers.js. - Write comprehensive automated tests using Hardhat, Truffle, or Foundry, and manage deployments across testnet and mainnet. - Create and maintain clear technical documentation for all smart contracts and on-chain processes. Required Qualifications - Minimum 5 years of blockchain-specific experience, with at least 8 years in software development overall. - Proven track record of shipping production-grade Solidity contracts (ERC-721, ERC-1155, ERC-20). - Deep proficiency with Hardhat, Truffle, or Foundry for testing and deployment workflows. - Solid experience integrating blockchain logic with Node.js backends via REST APIs and event-driven architectures. - Strong analytical mindset and excellent written/verbal communication skills. Preferred Qualifications - Experience building NFT marketplaces, royalty platforms, or collaborative Web3 products. - Active participation in open-source blockchain communities or projects.
Ouvrir sur Upwork