Ethereum Infrastructure & Smart Contracts
Budget: $25 – $50 USD
I’m kicking off a large-scale Web3 venture here in Singapore and need an experienced full-stack React.js / Node.js developer to help architect and code our Ethereum-based blockchain infrastructure. The core platform will revolve around custom Solidity smart contracts, and your work will slot straight into a multidisciplinary squad of blockchain engineers, front-end specialists, and UI/UX designers who are already in motion.
What you’ll tackle
From day one you’ll design, write, test, and deploy the smart contracts that power our ecosystem, then expose those contracts through secure Node.js services for a React front-end. Expect to handle everything from contract upgradability patterns and gas optimisation to event indexing and on-chain/off-chain data flow. Prior experience integrating crypto payment flows will be handy because the wider product roadmap includes that layer next.
Tooling & workflow highlights
Solidity, Hardhat, Ethers.js, TypeScript, React 18, Node 18, PostgreSQL (or similar), GitHub Actions for CI/CD, plus whatever testing and security auditing frameworks you trust.
Deliverables & acceptance
• Production-ready Solidity contracts with full unit and integration test coverage
• Deployment scripts and environment configs for testnet and mainnet
• REST/GraphQL endpoints that expose contract functionality to the React app
• Clear, developer-friendly documentation
I value clean, well-reviewed code, transparent communication, and a proactive mindset. If building the backbone of a new Ethereum platform excites you, let’s talk—share a short note on the toughest smart-contract problem you’ve solved and a link to the repo or audit report that proves it.
What you’ll tackle
From day one you’ll design, write, test, and deploy the smart contracts that power our ecosystem, then expose those contracts through secure Node.js services for a React front-end. Expect to handle everything from contract upgradability patterns and gas optimisation to event indexing and on-chain/off-chain data flow. Prior experience integrating crypto payment flows will be handy because the wider product roadmap includes that layer next.
Tooling & workflow highlights
Solidity, Hardhat, Ethers.js, TypeScript, React 18, Node 18, PostgreSQL (or similar), GitHub Actions for CI/CD, plus whatever testing and security auditing frameworks you trust.
Deliverables & acceptance
• Production-ready Solidity contracts with full unit and integration test coverage
• Deployment scripts and environment configs for testnet and mainnet
• REST/GraphQL endpoints that expose contract functionality to the React app
• Clear, developer-friendly documentation
I value clean, well-reviewed code, transparent communication, and a proactive mindset. If building the backbone of a new Ethereum platform excites you, let’s talk—share a short note on the toughest smart-contract problem you’ve solved and a link to the repo or audit report that proves it.