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I will build your web3 dapp with solidity smart contracts and react
I will develop your Web3 dApp with Solidity smart contracts and React frontend
Full-Stack Web3 / Blockchain Developer based in France, with Italian roots.
I design and deploy production-ready dApps: smart contracts, backend, frontend, deployment.
Built: CeloSave (DeFi savings)...
About this Gig
I'm a Full-Stack Web3 Developer with production experience on Celo, Base, Ethereum, and Stacks (Bitcoin L2). I don't just write smart contracts I ship complete, working dApps.
What sets me apart: my own products are live on mainnet right now. CeloSave (DeFi savings, Aave V3), TriviaQ (on-chain rewards game), CeloBank Agent (AI-powered banking agent, ERC-8004 verified), and ChainWarden (B2B compliance API) all built, deployed, and running in production.
I work across the full stack: Solidity smart contracts, React/Next.js frontends, Node.js backends, and deployment infrastructure (Vercel, Railway). I also build AI tooling MCP servers and autonomous agents for projects that need it.
Whether you need a single audited-style contract, a complete dApp with wallet integration, or a full production-ready application with backend and database, I can handle it end to end, in full autonomy.
25+ open source projects, verified mainnet contracts, published npm SDKs all publicly checkable on GitHub (@wkalidev).
Let's build something real. Message me with your project details and I'll get back to you fast.
Purpose:
DeFi
•
Gaming
•
NFT
•
Smart Contracts
Programming language:
JavaScript
•
Solidity
•
TypeScript
•
Node.js
•
React
Keep your assets and information safe
Cryptocurrency services focus solely on developing and programming. Never share sensitive information or private keys with others.
My Portfolio
FAQ
Do you only work with Celo and Base, or other chains too?
I primarily work on Celo, Base, Ethereum, and Stacks (Bitcoin L2), but I'm comfortable with any EVM-compatible chain. Let me know your target network and I'll confirm compatibility before we start.
Can I see your work before ordering?
Yes — check out my portfolio here on Fiverr and my GitHub (@wkalidev), where you'll find 25+ open source projects, including verified mainnet contracts and published npm SDKs.
Do you provide a security audit?
The Standard and Premium packages include a light security review of the code I write. For a full formal audit of an existing complex contract, please contact me first so we can scope it properly.
What do you need from me to get started?
Ideally: your target blockchain network, any existing code or design references, and a short description of what the contract or app should do. If you're not sure yet, message me and we'll figure it out together.
