I will build a production ready non custodial defi dapp
Fullstack Web3 and AI agent developer for dApps and MCP servers
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.
My own products are live on mainnet: CeloSave (DeFi savings), Volvic (Aave V3 yield on Base), TriviaQ (on-chain game, top 9 of 284 in Celo Proof of Ship), CeloBank Agent (AI banking agent, ERC-8004 verified) and ChainWarden (sanctions screening API).
Full stack: Solidity contracts tested with Foundry, React/Next.js frontends with wagmi/viem, Node.js backends, deployment on Vercel or Railway.
Non-custodial by design: your users keep their keys. I never ask for your private keys or seed phrase.
Honest notes:
- Gas fees for mainnet deployment are paid from your own wallet.
- I review every contract before mainnet, but that's not a third-party audit. For large TVL, I'll recommend one.
25+ open source projects and verified contracts, all public on GitHub (wkalidev).
Message me with your project details and I'll reply with a clear scope and timeline.
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
Other Blockchain Development & Solutions Services I Offer
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.

