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I will develop a decentralized crypto wallet and dex exchange with web3 and defi
Adnan
About this gig
DECENTRALIZED CRYPTO WALLET & DEX EXCHANGE | WEB3 | DEFI | REACT NATIVE
Need a secure, non-custodial crypto wallet with built-in DEX exchange? I build professional Web3 wallet apps for Android, iOS, and Web with full DeFi features.
What I will build:
- Non-custodial wallet (users own their keys)
- Multi-chain support: Ethereum, BSC, Polygon, Solana
- Send, receive & manage crypto tokens
- Built-in DEX swap (Uniswap / PancakeSwap)
- Token import and custom token support
- DeFi staking and yield farming integration
- NFT display and management
- WalletConnect integration
- QR code scanner & address sharing
- Biometric login & secure key storage
- Transaction history & gas fee estimation
- Clean modern UI/UX design
- Full source code included
Tech: React Native, Solidity, Web3.js, Ethers.js, Uniswap SDK, WalletConnect, Firebase
Why choose me:
- Users always control their private keys
- Multi-chain DeFi expertise
- App Store & Play Store publishing support
- Clean, documented, scalable code
- Regular updates throughout delivery
Message me before ordering.
Get to know Adnan
Adnan
Full Stack Mobile Developer, React Native, Web3 Blockchain, dApps and DeFi
- FromPakistan
- Member sinceMay 2018
- Avg. response time1 hour
- Last delivery1 month
Languages
Urdu, English, Spanish, French
🚀 Full Stack Developer | React Native | Web3 | dApps & DeFi
With 4+ years of experience, I build complete digital products — mobile apps (iOS & Android), modern websites, scalable backends & Web3/DeFi platforms.
✅ Web3 & DeFi — Crypto Wallets, dApps, NFT, Staking
✅ Multi-Chain Support — Ethereum, BNB Smart Chain, Polygon, Bitcoin, Solana, TRON, Litecoin, and more.
✅ React Native Apps — Taxi, Grocery, Social & more
✅ Websites & Dashboards — React.js / Next.js
✅ Backend APIs — Node.js, GraphQL, Firebase
Clean code. On-time delivery. Let's build! 💬
My Portfolio
FAQ
What blockchains do you support?
I support Ethereum, Binance Smart Chain (BSC), Polygon, Solana, and Avalanche. Multi-chain support across 4+ networks is available in the Premium package. Tell me which chains you need and I will include them.
Will users own and control their private keys?
Yes. I build non-custodial wallets where private keys and seed phrases are generated and stored securely on the user's own device. Your platform never has access to user keys at any point.
Can you integrate a DEX like Uniswap or PancakeSwap?
Yes. I can integrate Uniswap V2/V3, PancakeSwap, or any compatible DEX using their official SDKs. Users can swap tokens directly inside the wallet without leaving the app.
Do you build for Android and iOS both?
Yes. I use React Native which produces a single codebase that runs natively on both Android and iOS, saving you significant time and development cost.
Do you write custom smart contracts?
Yes. I can write, test, and deploy custom Solidity smart contracts for token swaps, staking, or any DeFi logic your project requires. Please mention this in your requirements before ordering.
