Free practice tests

Full Stack Developer practice test

The skills employers list most often for Full Stack Developer roles: Parsing, System Design, async, Node.js. Topics: Parsing, System Design, async, Node.js, React, TypeScript. Free, timed and scored instantly, with an explanation for every answer.

Search a job role, an exam code or a skill. We build the test, time it and score it, and show you where to improve.

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Before you start

The test runs in fullscreen and watches for you leaving it.

  • Pressing Esc, switching tabs or apps, or clicking a notification each count as one exit.
  • On the 4th exit the test submits automatically, with whatever you have answered so far.
  • Close other apps and silence notifications now. Keep your phone away from the screen.
  • Once started, the attempt counts even if you leave.