Thanks for your interest in joining the Wonderschool engineering team! Before we proceed with more formal interviews, we ask that all candidates submit a coding challenge. The coding challenge is a foundational piece of our process and it's referenced later in our process during the technical interviews.
For an experienced web developer, the coding challenge should not take longer than 2-3 hours to complete.
If at any point you have questions concerning the coding challenge and/or interview process, please do not hesitate to email engineering@wonderschool.com.
The coding challenge revolves around building a task list. Tasks belong to groups and can have dependencies on one another (i.e. if task X depends on task Y, task X cannot be completed until task Y is completed). The challenge includes 2 components:
- Build React-based UI
- Design database schema
The UI consists of 2 screens:
-
Overview: Displays a list of all the groups along with their completion status. Clicking on a group should render the detail screen.
-
Detail: Displays a list of all the tasks in the selected group and allows the user to toggle the completion status of unlocked tasks.
The screens should look like this:
The data you should use to populate your implementation is available at public/data.json and can be loaded from http://localhost:3000/data.json. SVG assets for the icons used in the design also live in public/ and can be loaded similarly.
Some things to keep in mind:
- Locked tasks cannot have their completion status toggled
- Tasks remain locked until all of their dependencies have been completed
- Your implementation should resemble the above design
- Please don't introduce any new dependencies, you should have everything you need to complete the challenge
- We value well structured code that follows best practices
Design a schema in SQL to store the task list data. You can add the SQL code needed to create the schema to schema.sql. The schema should define all tables, columns, and constraints needed to store the task list data.
To get started, clone this repo to your local machine. Next you'll want to install the dependencies and fire up the app:
npm install
npm start
At this point, the app should be running in development mode and any local modifications you make will be automatically detected and result in the app to reload.
You should only need to add/modify code in the src/ directory.
To submit your coding challenge, commit all your changes to the master branch and run the
following command:
git bundle create coding-challenge.bundle HEAD master
Email the the generated coding-challenge.bundle file to engineering@wonderschool.com. We do our best to review and respond to submissions within 1-2 business days.
Thanks for taking the time to do this coding challenge and here's hoping we talk soon!