In this blog post, we have gathered the platforms that offer skill assessment, coding challenges, and other tests for different tech roles including software development, design, product management, and marketing.

These challenges will help managers to perform a review of possible candidates, as well as to evaluate the skills of employees. Software engineers and designers can use these platforms to check their skills, take part in coding challenges, and prepare for interviews.

Skill test platforms

1 Codewars

On the platform, software developers can take challenges and train a range of skills in a variety of programming languages.

Language: English

2 Adaface

700+ hiring tests on all popular programming languages, software engineering frameworks, databases, DevOps, finance, accounting, cloud, and more.

Language: English

3 HackerRank

This is a technical interview platform that helps companies to assess candidates and developers to practice their coding skills and prepare for interviews.

Language: English

4 Toggl Hire

Skill tests for different tech roles including Frontend Developer, Digital Marketer, Customer Support, Java Backend Developer, and others. Available on subscription. Free 3 skill tests.

Language: English

5 Uxcel

Courses, educational content, skill testing, certification for designers. Available on subscription + free trial.

Language: English

6 Coderbyte

300+ code challenges and web development courses that can help prepare for upcoming job interviews. The coding challenges range in difficulty. Coding challenges are free.

Language: English

7 CodeinGame

CodinGame is a challenge-based training platform for programmers where you can improve your coding skills with fun exercises (25+ programming languages supported). Free 14-day trial.

Language: English, French

8 LeetCode

It's a website where people–mostly software engineers–practice their coding skills. There are 800+ questions, each with multiple solutions. Questions are ranked by level of difficulty: easy, medium, and hard. Free for the most part except for some extra features.

Language: English, Chinese

9 TopCoder

The platform offers skill challenges for Developers, Designers, Data Science, QA. Tests are paid.

Language: English

10 CodeSignal

CodeSignal is a developer assessment platform that offers a cloud-based technical assessment solution powered by professionally-designed coding tests. Certified assessment.

Language: English

11 ChallengeRocket.com

Life coding challenges after registration.

Language: English

12 HackerEarth

HackerEarth helps organizations with their technical hiring needs. The platform is used by organizations for technical skill assessment and remote video interviewing.

Language: English

13 Codiity_

The platform offers to train coding skills with online lessons and take part in coding challenges.

Language: English

14 Sphere Online Judge

SPOJ (Sphere Online Judge) is an online judge system. Tasks are prepared by its community of problem setters or are taken from previous programming contests. Allows advanced users to organize contests under their own rules and also includes a forum where programmers can discuss how to solve a particular problem.

Languages: English, Polish, Portuguese, Vietnamese

15 CodeChef

CodeChef is a competitive programming community of programmers from across the globe. It provides a lucrative user-friendly platform for beginner to expert coders to participate and hone their skills in competitive coding.

Languages: English

16 Rosalind

Rosalind is an educational resource and web project for learning bioinformatics through problem-solving and computer programming.

Language: English

17 CodingBat

CodingBat is a free site of live coding problems to build coding skills in Java and Python.

Language: English

18 CodeAbbey

Collection of programming problems to practice solving, learn to program and code, and win certificates.

Language: English, Russian, Spanish, German

19 TestGorilla

TestGorilla is a pre-employment test platform with a huge assessment library for different tech roles.

Language: English

20 Learn HTML

Learn HTML is a free interactive HTML tutorial (Python, Java, HTML, Go, JavaScrips, SQL, and more)

Language: English