I enjoyed very much practicing algorithms, getting to know companies through the challenges.

Pros

It is a well organised, polished platform for coding skills evaluation. The lessons and challenges provide good content for user practice and the summary section helps to understand the areas the user is going well and areas to improve.

Cons

The platform suits me very well so I don't have any comments on things I dislike or wish to improve.

Astron

It's much more convenient than paper tests.

Pros

Easy to use. I can manage a lot of candidates and different software languages.

Cons

There is not enough task. My package is not contains plagiarism check.

Not an adequate test for most engineering roles.

If you use it, I would suggest the live-code feature where you screenshare and watch the applicant solve one larger problem, preferably one that relates to the job at hand rather than a mensa puzzle. Make sure to review the failing submissions because in many cases, they had it right, but the machine graded them wrong, this could be for many reasons including the structure of the training set they were given was different from that of the testing data. Over half of what our engineers do is debug, interpret existing code, and build infrastructure. None of these things are tested with Codility. If they do pass, they are proficient in at least one element of the job, but not necessarily the rest. I interview any applicant who passes with 30% and always look at their code even if it failed.

Pros

It is deployable and easier for HR who don't understand code themselves. The ability to compare to other programmers' skills is nifty.

Cons

Many of the problems are not completely presented (I.E. there are other factors that are not mentioned which would influence the code, so applicants who submit overly-thorough code will actually fail because the machine didn't like their answer.. it is a guessing game) 20 minute time limits to solve an algorithm problem are NEVER the case in real life. Programmers do not work off memory, they work off documentation-- codility does not test on use of frameworks or libraries, only math concepts. The IDE is limited, will delete the applicant's code if they switch languages momentarily.

Great Experience. Loved the puzzles and exercises

Pros

A great coding platform, it's easy to use with a clean interface. I've enjoyed the exercises available. The problem statement and examples have great clarity without being too wordy or short. I've taken a couple of tests for companies who used Codility for screening. I've had great experience writing code, testing, putting in my own test-sets all available in the platform.

Cons

The software is pretty much self contained and clean. There isn't much I would complain about. I would love to see more exercises/puzzles.

Great company to work with for our Hard-Skills assessment

It has been a great first few months working with Codility! The staff, has been very patient and generous helping us out, doing more than we could ask for! Great customer experience up to now and hopefully it will always continue like this for the future as well.

Pros

Codility offers us the opportunity to have a IT assessment part during our recruitment process, which is probably the best in the market available.

Cons

It should have even more tests for each possible position :-)