Blockchain & Web3 Development
Starting at
$
3,000
About this service
Summary
FAQs
Can you help integrate blockchain features into my existing product or backend?
Yes. I can fully integrate smart contracts into your current backend or frontend, set up wallet connections, create APIs, and connect your app to Ethereum, Solana, Polygon, BSC, or other networks. I ensure a smooth end-to-end integration so your users can interact with blockchain features seamlessly.
What's included
Smart Contract Development
A fully written and optimized smart contract built in Solidity, tailored to your project’s requirements and deployed on the chosen EVM-compatible blockchain.
Blockchain Integration API
A backend integration layer (Node.js/Python) that connects your application or website to the blockchain via Web3 libraries.
Smart Contract Security Review
A detailed review of the contract logic, identifying vulnerabilities, gas optimizations, and best-practice improvements before deployment.
Test Suite & Deployment Scripts
Comprehensive automated tests using Hardhat plus deployment scripts to ensure your contract can be safely deployed and verified on the target network.
Technical Documentation
Clear documentation explaining the smart contract architecture, functions, events, and how to interact with the contract after deployment.
Recommendations
(5.0)
Client • Nov 16, 2025
Recommended
She fixed my fastapi errors extremely fast and got my deployment running smoothly in no time. Clear communication, incredible to work with, and great problem-solving skills. Highly recommend her!
Duration
4 weeks
Skills and tools
Blockchain Developer
Smart Contract Engineer
Web Developer
Ethereum
Hardhat
Solidity
Industries