Exchange

Exchange is a cross-platform financial application where users manage wallet and exchange workflows through a structured mobile experience backed by APIs and administration.

The client needed a financial application where users could manage transactions through a mobile experience—with clear movement from authentication through wallet, exchange, and history.

Financial applications require reliable handling of authentication, wallet workflows, transactions, history, and backend communication—where unclear state quickly becomes user-facing risk.

I designed the application flow around clear data movement and a maintainable architecture so each financial step stayed explicit and testable.

• Mapped the product as a linear financial flow: auth → wallet → exchange → transactions → history → backend/admin.
• Kept API communication and UI state aligned so transaction screens reflected backend truth.
• Separated admin communication concerns from the user-facing exchange experience.
• Favored maintainable Flutter structure over one-off screens for each financial action.

• Authentication flows
• Wallet and exchange workflows
• Transaction screens and history
• API integrations
• Admin communication surfaces

A Flutter financial client organized around explicit transaction data movement between the user, wallet/exchange layers, backend APIs, and administration.

1. User
2. Authentication
3. Wallet
4. Exchange
5. Transactions
6. History
7. Backend
8. Admin

• Keeping transaction and wallet state reliable across API boundaries.
• Presenting complex financial workflows in clear, usable mobile screens.
• Connecting user flows with backend and admin systems without tight coupling.

I built structured Flutter workflows for authentication, wallet/exchange actions, and history, with API integrations that kept the financial path understandable end to end.

Created a structured financial application experience with complex transaction workflows delivered in a maintainable Flutter product.