Codility Reviews - Pros & Cons, Ratings & more

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Canditech

Digiexam

iMocha

HackerRank

TestGorilla

Coderbyte

Codility's evidence-based platform helps hiring teams predict the real-life skills of their candidates, at scale. This brings faster hiring, time savings, and gives engineers more time to solve problems that matter. That’s why Slack, Tesla and Unity are using us already.

Codility

Web-based

Data engineer

I love the compiler of cordility and its a super Helpful also all language supported.

Senior IT Recruitment Consultant

It is an extra level of service that most of my competitors are providing. It is easy to use and helps me find the best candidates.

Software Developer for Huru Systems

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.

Lead Product Software Engineer & Scrum Master

Outstanding choice of candidate tests, good  test evaluation review function.

Founder - Chief Executive 

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

Founder

This is a great place for coders to prepare for interviews, and for employers to define an effective hiring process.

Software Engineer

A great coding platform, it's easy to use with a clean interface.

ai/ml lead

One and only feature that irritates me is that it is paid.

Senior Software Engineer

We can't see them for future reference purpose. It just show that this case failed.

Engineer

The IDE is limited, will delete the applicant's code if they switch languages momentarily.

Data Scientist / Management Consultant

I would prefer to see problems tailored to Machine Learning. The problems I encountered in the site are like puzzles to be solved.

Software Developer 

It's is easy to use and learn new technologies.

Codility has helped me improve my skills as a developer and as an employer, I use Codility to frequently keep my staff sharp on the job by frequently testing their capabilities.

A great developer assessment tool

Codility helps bridge the challenge of assessing coding skills on objective and efficient grounds. For me, it's like a mentor, which initiates you to first of all think as a software engineer would, maximize your codes, and be considerate of the edge cases in real-world conditions. Providing problems that are similar to those you might encounter in a job interview or while trying to solve especially complex coding problems on the job makes the process of preparing for technical interviews much easier.

Codility’s Strengths and Areas for Improvement

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. 

Not an adequate test for most engineering roles.

Dear Mark, thank you very much for your feedback! 
We are sorry to hear that your experience with Codility didn't meet your expectations. We'll strive to do better in the future! 

Algorithmic tasks are only a small part of our task library. We also offer a lot of real-life tasks, including the ones where candidates need to fix the bugs in existing code or rewrite the code to improve the application performance. Moreover, our Partnered Tasks service allows you to add your own real-life tasks to our platform. 

If you're interested in learning more about all sorts of tasks we offer to our customers, please reach out to sales@codility.com. We'd also be happy to hear more about what kind of tasks or technologies are missing in our library, so we can add them ASAP. 

Your friends at Codility

First time I used Codility 8-9 month ago in  my interview. It was Microsoft interview. Scince that time I some times I join Codility and interested Codility questions.

My Codility 

Codility does the hard work for the recruiting team

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

Very positive.

Codility has really helped us speed up our recruitment process enabling us to do all of our candidate testing pre-interview

Speeds up the recruitment process

Student using Codility after code bootcamp

My experience was awesome in general. I liked to do the exercises; they're hard enough to get us interested in solving them. My only complain is I'd like to get the final report after an interview to be able to work on my weaknesses.  That would be great.

Best code assessment website

Como empresa de software Codility nos ha ayudado muchísimo en el proceso de selección de candidatos IT, ya que con Codility hacemos las pruebas técnicas para evaluar los conocimientos de éstos candidatos.

Toma el control de tu proceso de selección con Codility

Take control of your selection process with Codility

Coding for Technical Assessment 

In codility have learned a lot more so in software development , with new technologies 

Intellectual codility review 

My join on using codility to asses developer's and  to improve my coding skills 

It's fast to have a real notion about the capabilities of the candidate.
We can get material to go deeper when we're interviewing candidate.

Improvement

Thanks for the feedback António, great that you like how easy Codility is to use. Since you asked about interview functionalities, you might want to try our CodeLive product which gives you a shared interface with your candidate for solving challenges together or coding together on a whiteboard. Feel free to contact us at support@codility.com and we'll give you a tour!

It's much more convenient than paper tests.

Astron

Hi Gabor, great to hear that you like using Codility! In case you weren't aware, your license contains plagiarism prevention (the Codility task library is protected and patrolled online for material leaks). However, if you'd like to try out our plagiarism detection features like Similarity Check, please contact us at support@codility.com and we'll be happy to let you try it out.

Excellent to assess how candidates act, but overall too expensive

Great value added for big recruiting campaigns

Online coding platform

Dear Ashish, thank you very much for your feedback! 
We're happy to hear that you had a positive experience with Codility :) 

There are multiple reasons why some of the test cases are hidden. Some of the test cases are rather complicated, which might create some confusion, and we strive to provide candidates with the best experience possible. In addition, we don't make all test cases visible to candidates because this would encourage them to hardcode a solution rather than writing one that will scale in a real-life job related scenario.

If you have any questions on how our scoring system works, please feel free to reach out to support@codility.com

Your friends at Codility

in one material, we can test with many programmer language. 

it's very helpful software

Most importantly, codility allowed our organization to dramatically speed up our recruiting process without a loss in quality of screening.

Codility Reviews (2025)

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