It tests the various skills on different level very well based on requirement from the organization. The UI is very clean and easy to use. I contacted customer support as my test report was not getting generated, and they quickly resolved my issue and I got my test report. I've already give few of the codility tests and it works perfectly.

It’s easy to use. The availability of various programming languages, and the ability to switch between them, is straightforward.

I like that Codility gives real coding challenges like the ones asked in interviews. The test cases are strong and help catch edge cases. The timer and coding environment feel like a real test, which helps reduce anxiety during actual interviews.