Develop a cryptocurrency exchange application that is scalable, responsive and safe.

The goal of the project is to build a cryptocurrency exchange application with support for two primary assets (Bitcoin and USDT) allowing users to Buy, Sell, and Swap the asset. Additionally, the application will have a section where users can trade specific giftcards, a single fiat gateway for settlement, and an admin dashboard.

Note: An already-existing database on mongoDB atlas and all of the APIs necessary to complete the task are available.