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Frontend Engineer - Coding challenge

This test is a part of our hiring process at Tailwarden for the Frontend Engineer position. It should take you between 1 and 3 hours depending on your experience.

Feel free to apply! Drop us a line with your LinkedIn/GitHub/Twitter and link of your code repository at [email protected]

At Tailwarden, our frontend stack consists of React and Next.js, but you are free to use any modern framework you wish, or do it VanillaJS style.

Threat this project as if you/we would continue working on this after your assignment: maintainability, scalability, and readability are super important.

Goal

For this assignment, you are supposed to build a dashboard for developers to monitor their cloud costs and usage.

To give you an idea, here how the app should look like:

Mokckup

Developers can do the following:

  • Add a cloud account (AWS, GCP, Azure ...)
  • Track cloud account stats (costs & usage)
  • Filter data by cloud account.

Bonus: Surprise us! Add a feature that you think would work well here ! Also, feel free to add your own look & feel.

API documentation

To fetch the list of cloud accounts, you’ll need to make request to a publicly-available API to get JSON content:

GET https://hiring.tailwarden.com/v1/accounts

The JSON response contains an array of cloud accounts, each account has the following JSON attributes:

{
    "id": "62666a73422739696d520c91",
    "provider": "AWS",
    "label": "production",
    "logo": "https://cdn.komiser.io/images/aws.png"
}

To get a cloud account stats, issue the following request:

GET https://hiring.tailwarden.com/v1/accounts/{id}

The JSON response contains the following attributes:

{
    "bill": 1479.22,
    "servers": 135,
    "regions": 3,
    "alarms": 2
}

To get a cloud account costs grouped by service for the last 6 months, use the following endpoint:

GET https://hiring.tailwarden.com/v1/accounts/{id}/history

The JSON response contains an array of datapoints. Each datapoint contains the following attributes:

{
    "date": "2021-04-01T00:00:00.000Z",
    "groups": [
        {
            "key": "Compute",
            "amount": 53.33
        },
        {
            "key": "Storage",
            "amount": 146.1
        },
        {
            "key": "Network",
            "amount": 72.35
        }
    ]
}

Submission

Create a new repo into your favorite git platform (GitHub, Gitlab, etc) with a README file containing list of instructions to run the project.

After you've finished, you can share the repository URL with us.

Review

After you delivered the completed assignment to us, we will review it as soon as we can, generally within 48 hours. We pay special attention to:

  • Coding skills (testable code, usage of HTML & CSS properly)
  • Adopting a component-based structure with a clean modern look.
  • Code organization (modularity, dependencies between modules, naming, etc)
  • Overall code quality (edge cases, usage of tools, performance, best practices)

Good luck,