Altruistiq hiring assessment

Welcome to Altruistiq! Thank you very much for being here. 🙏

For this assessment we will be using 4 things:

1. The code in the repo
2. Your laptop to run the code
3. Your IDE which you will screenshare
4. (optional) https://webwhiteboard.com/ for architecturing & brainstorming

This repo will help you kick-start your live coding session. The following has been set up (check package.json for full details) but you're free to use any package you may seem fit:

• express
• mocha
• babel
• axios
• lodash
• vue
• vuex

Hot reloading is enabled (backend) and tests rerun when code changes.

Setup

Clone this repo, then

cd backend && npm i
cd fronted && npm i

Then in footprintApi.js add the API key that's been given to you on line 8

Run it

Code automatically reloads upon code changes. You will need to refresh your browser if you use it.

cd backend && npm start
cd frontend && npm start

Run tests

To run test (code and tests are being watched so automatically reruns).

npm test

Tasks

Please read through all the tasks to understand the full scope of this assessment.

Task 1 - Create an API that returns the total emission per country per year (~15min)

Create an api endpoint at /chart-data.
To get the data for this API, you will use the footprint api which has already been setup for you. Use as follows:

import footprintApi from "./footprintApi";

// get all countries and their countryCodes
await footprintApi.getCountries();

// this will give you carbon data per year for that country
await footprintApi.getDataForCountry(countryCode);

Task 2 - Create an animated chart (~40 min)

Create an animated chart as per this example, but style it as per the Figma design

Fetch this Figma file to get started.

The font used is

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap')

Discussion (~15min)

Caching

Cache on front and backend.

Securing API

Secure the API endpoints however you see fit.

Scaling

Make your API response under 1 second. Keep in mind that your API can be triggered multiple times per second.