A gif showing how to create a c9.io account.

We recommend building our backend challenges on c9.io, a powerful browser-based development environment. This will save you hours of time that you would spend configuring your local computer to run Node.js and MongoDB - time you could instead spend coding.

Create a c9.io account by clicking the GitHub symbol in the upper right hand corner of the c9.io page. Click the big plus symbol to create a new workspace. Enter your email address when prompted.