https://github.com/riccardogiorato/moonpay-full-stack-challenge
moonpay fullstack challenge - take home test
https://github.com/riccardogiorato/moonpay-full-stack-challenge
challenge coding-challenge fullstack interview-test moonpay take-home-test
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moonpay fullstack challenge - take home test
- Host: GitHub
- URL: https://github.com/riccardogiorato/moonpay-full-stack-challenge
- Owner: riccardogiorato
- Created: 2022-01-11T19:16:16.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-01-16T12:20:07.000Z (over 3 years ago)
- Last Synced: 2025-01-06T18:54:35.577Z (4 months ago)
- Topics: challenge, coding-challenge, fullstack, interview-test, moonpay, take-home-test
- Language: TypeScript
- Homepage: https://moonpay-frontend.riccardogiorato.com/
- Size: 149 KB
- Stars: 4
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
The new standard for fiat to crypto
# Take Home Test (Backend & Frontend)
## Overview
This is a takehome test for candidates applying for a full-stack developer
position at MoonPay. It contains three sections: "Frontend", "Backend" and "Follow-up" which
together include a series of tests involving HTML, CSS, JavaScript and Node.js.
Feel free to solve these questions however you see fit, using whatever coding
style or third-party libraries you think are appropriate.
To start the test, simply clone this repo and make your edits locally.
## Frontend
For the frontend portion of the test, use the `/frontend` folder. There are 7 features we'd like to add:
1. Fetch and display the list of currencies available on MoonPay (see endpoint below).
2. Add CSS to create a responsive layout that will display one column on mobile
devices, two columns on tablet devices, and three columns on desktops.
3. Add a toggle to control if currencies not supported in the US should be displayed.
4. Add a toggle to control if currencies not available in test mode should be displayed.
5. Add a button to sort the list of currencies by alphabetical order using the name of the currencies.
6. Add a button to sort the list of currencies by alphabetical order using the symbol/code of the currencies.
7. Add a button to apply a random shuffle to the list of currencies when it is clicked.
NOTE: Please make the app be served on port `:3000`.
Feel free to structure the code however you prefer and use third-party libraries at your discretion.
Do not spend too much time on making it beautiful. Basic aesthetics are welcome, but we are not
grading your design skills here.
### API Information
- **MoonPay API `GET /v3/currencies` endpoint:** https://api.moonpay.com/v3/currencies
## Backend
For the backend portion of the test, use the `/backend` folder. We'd like to write some code that achieves the following:
1. Create a JSON API (REST or GraphQL) using Node.js which will return which cryptocurrency exchange we should use to buy a given amount of Bitcoin to minimize the amount of USD or USDT we'll spend on this trade.
Example API call (for 1 BTC):
```
curl http://localhost:4000/exchange-routing?amount=1
```
Example API response (if Coinbase price of \$10,000 / BTC is the cheapest):
```
{
"btcAmount": 1,
"usdAmount": 10000,
"exchange": "coinbase"
}
```
2. You'll need to compare Binance and Coinbase [order books](https://www.investopedia.com/terms/o/order-book.asp) and compute the best execution price for the given amount of Bitcoin we want to buy. (You can assume that 1 USDT = 1 USD at all time.)
3. [Bonus] Add a third exchange to compare with Binance and Coinbase.
Feel free to structure the code however you prefer and use third-party libraries at your discretion.
NOTE: Please make the server listen on port `:4000`.
### API Information & Documentation
- **[Crypto Trading 101: How to Read an Exchange Order Book](https://www.coindesk.com/crypto-trading-101-how-to-read-an-exchange-order-book)**
- **[Binance Order Book API Endpoint](https://github.com/binance/binance-spot-api-docs/blob/master/rest-api.md#order-book)**
- **[Coinbase Order Book API Endpoint](https://docs.cloud.coinbase.com/exchange/reference/exchangerestapi_getproductbook)**
_Note that both APIs above are public and don't require any authentication._
## Follow-up
Answer the questions in the [FOLLOW-UP.md](./FOLLOW-UP.md) file.
## Docker
The test contains a basic `docker-compose.yml` file. It uses the latest official NodeJS
Docker image and creates two containers - one for backend and one for frontend.
The respective folder is mounted in `/app` directory inside the container.
It isn't a requirement to use it, but may be convenient.
NOTE: We WILL run your code inside these containers.
## Submitting Your Code
Once you've completed the test, please compress your files (via zip or tar) and
return them as a link or email attachment in reply to your test invite. We'd like the
code in your submission to remain private, so please avoid committing or pushing
the code publicly.
**Do not include node_modules or .git in your submission**
Once we receive it, a member of our team will review and we'll get back to you
as soon as possible.
Thanks!