Contact person: Business Client

Phone:Show

Email:Show

Location: Sincelejo, Colombia

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"The core smart contracts for my upcoming DeFi application are ready; what I now need is a web3 engineer to wire the product into the Ethereum mainnet and test networks. Your job is strictly about blockchain integration—no fresh contract development is required.

Here’s what I expect from you:
• Connect the existing front-end (React + TypeScript) to Ethereum using [login to view URL] or web3.js.
• Build a clean service layer that signs and submits transactions, listens for contract events, and surfaces them to the UI.
• Set up a robust wallet flow (MetaMask first, WalletConnect as a nice-to-have) with clear error handling.
• Provide automated tests on Hardhat or Truffle that prove deposits, withdrawals, and reward claims work end-to-end.
• Deliver concise technical documentation so another engineer can extend or maintain the integration.

I will give you the contract ABIs, deployment addresses, and a brief API spec for the front-end hooks. The engagement is complete when test-net transactions succeed consistently, gas estimates are accurate, and the documentation passes peer review. Let’s build something great on Ethereum together." (client-provided description)