Cross-Platform Decentralized Finance App Development

I designed and developed a cross-platform DeFi banking application using Flutter for both mobile and web. The app enables users to create secure crypto wallets, check token balances, and perform peer-to-peer token transfers — all without relying on centralized systems like MetaMask.

Wallet Creation: Users can generate secure wallets with BIP39 mnemonics and private keys stored locally (no third-party wallets).

Token Management: Real-time display of token balances using Web3 integration.

Token Transfers: Send and receive tokens between wallets via smart contracts.

Cross-Platform Support: Built with Flutter for Android, iOS, and Web compatibility.

Smart Contract Integration: Interfaced with Ethereum blockchain using Web3dart for real transaction execution.

Admin Panel: A separate web interface for the admin to deploy smart contracts, manage users, and approve minting or update requests.

Real-Time Notifications: Firebase used to push alerts for bid acceptance and transaction status.

Transaction History: Users can view transaction history with advanced filters (search, token type, date range, etc.).

Scheduling & Rating: Built-in flow to schedule sessions and rate users after services are completed (if service-based use case is needed).

Flutter (Mobile & Web)

Web3dart for Ethereum interaction

Firebase for auth, Firestore, and notifications

Truffle for smart contract compilation

Shared Preferences & Secure Storage for wallet data

MongoDB for backend user data

Node.js for Rest APIs

IPFS for assets data