Developer Needed for Non-Custodial Crypto Swap DApp (Web + Mobile) Description: Looking for an experienced blockchain developer to build a simple non-custodial crypto swap app — similar to Uniswap or PancakeSwap, but with only the swap function. Users should be able to connect their own wallets (MetaMask, WalletConnect) and directly swap tokens. No custody — swaps will use existing DEX aggregators like 0x or 1inch. Requirements: Strong experience with Web3 development (ethers.js, web3.js, WalletConnect) Familiarity with DEX integrations (Uniswap, 1inch, 0x) Frontend: React / Next.js (React Native for mobile is a plus) Understanding of Ethereum / BNB Chain / Polygon API integration & transaction handling experience Focus on security and non-custodial architecture Project Goal: Deliver an MVP where users can: Connect their wallet Swap Token A → Token B View transaction status (pending/success) Deliverables: Working prototype Clear documentation GitHub repository with code handover Preferred: Freelancers with previous DeFi / Web3 project experience.