Best Developer Assessment Tools - 2023

The best tech assessment tools, pricing guidelines, benefits, pitfalls, and more

Phil Strazzulla
HR Tech Expert, Harvard MBA, Software Enthusiast

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The Best Tech Assessment Platforms

Hand picked by our HR Technology experts after product testing, user research, and much debate - enjoy!

With an impressive 60+ languages and frameworks supported, CodinGame allows recruiters to screen developers through fun coding games and challenges.
Used by massive companies including Facebook, Apple and Klarna, Qualified enables hiring managers to assess software engineers at scale with online coding tests in a natural coding environment.
HackerRank allows you to deeply understand the skill sets of potentially hired developers through coding challenges, peer-review style assessments, real-world projects, and more. You can even compare your candidates’ test scores against HackerRank’s entire community of over 18 million developers.
Coderbyte enables brands to filter programming prospects via pre-built challenge templates, code pairing sessions, and take-home projects. It also detects plagiarism by identifying prospects copying code and leaving assessment pages.
Byteboard interviews replace pre-onsite interviews across all of your key technical roles with a small, time-boxed project that simulates real-life asynchronous work.
CodeSignal’s technical assessment solution offers professionally-designed tests, as well as a proprietary flight simulator and predictive coding score, ensuring tech recruiters are well-equipped to assess real-world skills, in a real-world developing environment.
Codility’s technical recruitment platform allows hiring managers to test the coding skills of developers and make evidence-based hiring decisions at scale.
CoderPad’s technical interview and screening tool is simple, fast, and powerful. It emulates a real-world, working environment and lets candidates write programs that run.

Introduction to Developer Assessment Tools

If you’re looking to hire more quality software engineers faster, then you are probably researching the various online coding interview platforms.

These tools allow recruiting and engineering teams to effectively screen more applicants in an unbiased way that allows for the right candidates with the right skills to get the job.

Additionally, online coding assessments (along with video interviews) have become more popular in the current COVID-19 pandemic where in person interviews are becoming necessary with most offices closed.

Below is our research into this space - everything you need to know before deciding on whether or not to move forward with buying a coding interview solution, along with suggested partners that we’ve personally vetted.  Good luck and let us know if we’re missing anything!

Our criteria: How we chose the best vendors

We take research seriously. To make sure we’re offering our readers the very best solutions in a given software category, we are methodical, rigorous, and expansive in our research. We consult with HR professionals, vendors, and industry experts. We cut through the noise to bring you a carefully curated list of vendors, along with other essential information, to help you find the right software platform for your business. 

Here’s how we chose who makes the cut: 

Product: We believe in gaining a comprehensive understanding of a product before we recommend it, so we start by getting to know the software. Whenever possible, we meet with a senior executive (CEO or Head of Product) for a demo and Q&A. We also test the product ourselves to make sure it has a solid UI, intuitive workflows, and the features to make it a best-in-class offering. 

User feedback: We go straight to the source and compile feedback on user experience. Real-world input supports our commitment to diligence in our software evaluation methods and the products we recommend. Keeping up with the everyday experience of HR pros also puts new vendors on our radar, and it keeps us close to our community so we can better connect the right products to the right people.

Financial metrics: We are certified finance nerds, so we use all the data we can get our hands on to make selections for our guides. We comb through data for concrete statistics like retention rates, growth, profitability, and scalability. We evaluate the bottom line of each product because we know making a software purchase can put your reputation on the line. 

Best for a use case: Software is never a one-size-fits-all product. Sometimes the best solution is free or cheap. Other times it’s the one that is best for global companies or the one that’s sized right for early-stage startups. Keeping this in mind, we include solutions across the spectrum so our readers can find the best fit for their unique needs.

Here's more detail if you want to read more about how we research vendors. Our dedicated staff writers rely on hard data, impartial experts, and user feedback to ensure our reviews are helpful, truthful, and hopefully a pleasure to read!

Top Tech Assessment Platforms

We track thousands of HRTech solutions, these are the best online coding interview tool per our research and expert council as of 2023.

CodinGame

Review:

CodinGame make the evaluation and shortlisting of programmers simple and fast. By challenging developers on real-life problems, they help recruiters and CTOs reduce hiring costs with reliable results on candidates' skills. Clients include Nasdaq, Thales and Ubisoft.

CodinGame

Stats:

  • Over 15 million coding challenges
  • 96.98% test completion rate 
  • Over 60+ programming languages
  • 2 million developers in their international community
  • Over 15 million coding challenges
  • 96.98% test completion rate 
  • Over 60+ programming languages
  • 2 million developers in their international community

CodinGame

Pricing:

CodinGame starts with a 14-day free trial. After that, you can move on to one of their paid plans:

  • Personal: Made for solo users, the Personal plan costs €149 a month and allows you to access to over 3900 questions and exercises, to test candidates in over 60 languages and frameworks.
  • Team: For €299 per month (billed annually), the Team plan packs all the features from Personal, plus 2 additional user seats (3 seats in total), 10 custom questions, ATS integration, API access, company branding, and role-based permissions.
  • Business: Priced at €599 per month (billed annually), the Business plan covers everything from Team, plus 7 more user seats (10 seats in total), unlimited custom questions, and Single Sign-On user authentication. 
  • Enterprise: Designed for high-growth businesses with complex and urgent hiring needs, the Enterprise plan offers everything on previous plans, plus a few extra perks such as unlimited user seats, a custom number of tests, and a dedicated customer success manager. Contact CodinGame’s Sales team for pricing.

CodinGame starts with a 14-day free trial. After that, you can move on to one of their paid plans:

  • Personal: Made for solo users, the Personal plan costs €149 a month and allows you to access to over 3900 questions and exercises, to test candidates in over 60 languages and frameworks.
  • Team: For €299 per month (billed annually), the Team plan packs all the features from Personal, plus 2 additional user seats (3 seats in total), 10 custom questions, ATS integration, API access, company branding, and role-based permissions.
  • Business: Priced at €599 per month (billed annually), the Business plan covers everything from Team, plus 7 more user seats (10 seats in total), unlimited custom questions, and Single Sign-On user authentication. 
  • Enterprise: Designed for high-growth businesses with complex and urgent hiring needs, the Enterprise plan offers everything on previous plans, plus a few extra perks such as unlimited user seats, a custom number of tests, and a dedicated customer success manager. Contact CodinGame’s Sales team for pricing.

Best For

CodinGame is best suited for medium and large companies looking to test developers’ skills across various languages and frameworks through gamified assessments.

Qualified.io

Review:

Qualified allows your team to effectively assess technical talent while saving your recruiting and engineering team time.  The platform was developed by the creators of CodeWars, a community where over 1 million engineers sharpen their skills.  They’re focused on unit-testing and test driven development to design assessments that mirror actual programming work as much as possible.  Their customers include Apple, GE and UC Berkeley.

Qualified.io

Stats:

  • Founded in 2016
  • Facilitates assessments for over 28 programming languages
  • Founded in 2016
  • Facilitates assessments for over 28 programming languages

Qualified.io

Pricing:

Qualified does offer a free trial. Beyond that, you need to get in touch with a sales rep to receive a custom quote based on your needs.

Qualified does offer a free trial. Beyond that, you need to get in touch with a sales rep to receive a custom quote based on your needs.

Best For

Qualified is best suited for enterprise customers with heavy needs for developers.

CodeSignal

Review:

CodeSignal is a technical assessment platform that helps companies ascertain the skills of prospective developers and engineers before they’re hired. The platform features tests that are developed by technical assessment experts and validated by a team of Ph.D. IO Psychologists. It also packs a proprietary flight simulator for developers, allowing them to work on a full-stack application, complete with databases, APIs, and frontend layers. Once an assessment is completed, candidates are automatically assigned a coding score that serves as an objective measure of their skills and can also be used for comparison purposes.

CodeSignal

Stats:

  • Outreach, a sales engagement software vendor, managed to free up 40-60% of their engineers' time since implementing CodeSignal.
  • GoodTime, a meeting optimization software vendor, reduced time-to-hire for their engineering roles by 40 days with CodeSignal.

CodeSignal

Pricing:

CodeSignal doesn't disclose prices upfront. They prefer to understand your recruiting process and the challenges you're facing first, then provide you with a custom package that fits your needs.

Best For:

CodeSignal is designed for mid-size and large companies that hire many engineers and developers, and need to test for coding skills on a frequent basis.

Coderbyte

Review:

Coderbyte is a self-serve code assessment pre-employment testing solution for interviews, screening, and take-home projects. 

The platform allows recruiters to create custom coding challenges in various programming languages, conduct remote interviews in real-time, use templates to create customizable code screening assessments, and simulate whiteboard sessions with prospects that allow for cooperative feedback and analysis. A major goal of this solution is to enable companies to filter out unqualified prospects.

Coderbyte

Stats:

  • Companies working with Coderbyte have been known to save interview and screening time. 
  • Coderbyte allows recruiters to pick from any of their 400+ coding challenges or library of questions to create assessments for all technical roles in minutes.

Coderbyte

Pricing:

The solution is available on an annual or monthly subscription and offers a 14-day free trial. 

Coderbyte offers 3 pricing plans:

  • Monthly Plan: This plan costs $199 per month. 
  • Annual Plan: The annual plan costs $1188 at $99 per month. 
  • Pay Per Candidate Plan: This plan costs $10 per candidate and allows you to invite up to 50 candidates.

Best For:

Coderbyte is a good fit for companies recruiting for technical positions that require a self-serve affordable solution.

CoderPad

Review:

CoderPad allows technical teams to replace whiteboard interviews (or even worse, over the phone interviews where candidates are expected to program in a text editor that won't even run their code) with a live programming environment that can facilitate both in person and virtual interviews.  Their solution lets applicants work in real time on a problem in an IDE where they can test their solutions and collaborate with your team - see their skills, style and smarts as they solve real problems.  Customers include Lyft, AirBnB, Dropbox and many more.

CoderPad

Stats:

  • 3,300+ customers
  • 40+ countries
  • 3 million+ interviews in CoderPad
  • 90,000+ interviews per month

CoderPad

Pricing:

CoderPad has three plans

  • Personal: For $50 per month, this plan accommodates a single-user plan to collaborate with candidates on writing working code.
  • Team: For $250 per month, this plan facilitates collaboration on questions, files, and databases.
  • Business: For $750 per month, this plan equips companies with the tools they need for high-volume interviewing.

Best For:

CoderPad can be used by companies of all sizes.

Byteboard

Review:

Byteboard was incubated inside of Google's Area 120.  Their solution enables companies to assess engineering candidates through real world engineering exercises vs more academic constructs like algorithms and data structures.

Byteboard

Stats:

  • 88% satisfied candidates post-interview
  • 57% avg. onsite-to-offer rate (industry avg. of 25%)
  • 100% reduction in pre-onsite interviewer time

Byteboard

Pricing:

Byteboard doesn't disclose their prices upfront. Contact a Sales rep to get a custom quote.

Best For:

Byteboard is best suited for large companies.

HackerRank

Review:

HackerRank’s technical screening solution allows you to assess the skills of prospective developers before they join your team. You can use it to create tests, invite candidates to take them, and review their scores from a single view. You can also have candidates do code reviews, i.e. review existing code written by other team members and provide suggestions for improvement just like a standard peer review, or assign candidates role-specific projects to assess how they’d perform if they were a part of the company.

Once candidates complete the assessments you’ve sent, you can review their scores, compare them to one another, and even benchmark their scores against HackerRank’s community of over 18 million developers.

HackerRank

Stats:

  • 25% of Fortune 100 companies use HackerRank
  • HackerRank’s platform hosts over 18 million developers 
  • 188 million code submissions across all assessments and interviews

HackerRank

Pricing:

Aside from their free trial, HackerRank has four plans. When billed annually, they cost as follows:

  • Interview: This plan costs $25 per month for 1 interviewer license, and access to the Interviews module and standard content library only. 
  • Individual: This plan costs $249 per month and comes with everything in the Interview plan, along with access to the Tests module, a quota of 360 candidates a year, and one full-access user license. 
  • Team: For $599 per month, the Team plan comes with everything in Individual, plus two full-access user licenses instead of one, a total of three Interviewer licenses, an increased quota of 720 candidates a year, access to HackerRank’s premium content library, and the ability to have Projects, Benchmarking, and Code Reviews as add-ons. 
  • Enterprise Platform: This plan has a custom number of licenses, candidate quota, and pricing. Customers on this plan also get assigned a dedicated success manager. Contact HackerRank’s Sales team for a quote.

Best For:

In their words, HackerRank is "enterprise-ready for effortless scaling". This means it's used both by fast-growing startups and large companies.

Codility

Review:

Codility is laser focused on helping the right people get the right jobs based on skills, not background.   One of the things we like the most about this platform is the positive feedback around the accuracy of assessment from developers who’ve taken the tests.

Codility

Stats:

  • 1500 customers in 63 countries
  • 30,000 candidate evaluations facilitate monthly
  • 40+ languages and technologies

Codility

Pricing:

The pricing of Codility’s solutions varies depending on the scale of your technical recruitment. Contact their Sales team for a custom quote.

Best For:

Codility is best suited for enterprises.

Benefits of Tech Recruiting Software

There are several key advantages that talent acquisition teams can reap from using software to vet engineering candidates.  Some people ask, what is a tech assessment?  A technical assessment is a coding test that mirrors the real world work of a computer engineer at a company and asks the job applicant to complete a series of coding exercises in a developer environment that tests their skills as a programmer.  Like any pre-employment evaluation tool, it is meant to test an applicant’s likelihood of succeeding in a potential role.  However, there are specific benefits to this segment of online assessment platforms.

  • Remote Interviews: If you’re looking to hire remote engineers, or cannot meet in person due to the restraints of COVID-19, virtual tech assessments are a great way to continue moving the interview process forward, along with video interviews.
  • Engineer Time: First off, your engineering teams don’t have to spend nearly as much time in the earliest parts of the recruiting cycle. This means software engineers can spend more time coding.  In many cases, this increase in productivity is similar to a company hiring 10% more engineers.
  • Better Hires: Your engineering team is no doubt brilliant, but are they the best interviewers?  How many job applicants do they unfairly disqualify in the early days simply because their specialty isn’t hiring.  Unbiased coding tests allow you to better asses your top job applicants through standardized interview questions that test skills in the programming languages you care the most about.
  • Candidate Experience: Because your software engineer screens are now automated, you can evaluate a larger number of applicants.  This allows you to give more people the opportunity to go through the screen a show their coding skills beyond what is on their resume.
  • Diversity Hiring: An engineering assessment tool evaluates skills objectively and isn’t biased by gender, ethnicity, age, nor educational pedigree.  This means the people who have the skills to do the job will make it to the next phase.
  • More Signal: Generally speaking a resume is a poor proxy for how strong a developer is.  Coding tests allow employers to expand their pipeline beyond people who simply look good on paper.
  • Easy to Get Started: Most of these vendors offer free trials to get started.  This means you can quickly understand the workflow for a given tool, and how it can impact your overall hiring process.  Our advice is to have someone from recruiting and engineering involved during any pilot or trial phase as both organizations need to buy into this initiative.

Common Pitfalls and Misconceptions about Online Coding Interview Platforms

We strongly believe that online coding tests are a great way to streamline your engineering hiring while producing a meaningful return on investment.  That said, there are several misconceptions and pitfalls that we see from the talent acquisition community that we want you to be aware of.

  • Screening, not interviewing: Engineer interview tools are great at screening candidates.  However, they are not a replacement for the actual interview.  You still need to understand how someone deals with conflict, compromise, communication, etc before hiring them.  Coding tools are merely the first step.
  • Diversity: Make sure you understand how diversity candidates are scoring on the tests you are administering.  One vendor in this space found their tests were biased against female engineers simply because no females were originally involved in writing the tests.  Getting women involved in building the question set fixed this problem.
  • Engineer buy in: Your engineering team needs to trust in these assessments.  If they don’t, this solution provides very little value as they’ll still need to spend time doing their own screens.  Educating the engineering team typically happens from a leader on the recruiting side.  Of course, there are hiring managers spearheading this change as well.  To ensure a successful buying and implementation of the product, get engineering involved when you are demo’ing/trialing the product.
  • Fraud: Understand how the screening tool you’re using ensures that candidates are taking the tests themselves and not posting fraudulent scores.
  • What’s tested matters: You have the ability to customize your coding tests in a way that reflects the specific programming languages and skills relevant to the job.  However, what idiosyncrasies are still being left out?  Maybe you only pair program, and need to test this.  Maybe there should be a psychometric part of this test, or specific aptitudes that need to be measured in addition to skills.
  • Tool, not marketplace: These tools enable your recruiting to team to vet candidates more effectively.  But, they are not sources of candidates like a job board would be (although some of the best tech assessment vendors can help with sourcing).
  • Don’t leave humans out: Just because you have a new way to vet software engineers doesn’t mean you can simply let your coding assessment handle all candidate interactions.  Like any pre-employment screening, you need to realize candidate experience is paramount.  Set expectations, sell the person on your culture, and overall just treat them as you’d want to be as an applicant.

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Coding Interview Software Pricing

Tech recruiting platform pricing is typically based on the number of interviews you’ll be conducting on a monthly basis.  We like this because the more interviews you conduct, the more value you’re going to get.

Pricing starts in the $50/mo range for companies who are just getting started with one req, and can grow into the 6 figure range pretty easily.  

Please note that these are ranges and are meant to give you a general idea of how much you might pay for your organization.  However, prices will vary depending on a number of factors including: the features you need, support levels, vendor you partner with, HRTech integrations, etc.

Also note that many of the best online coding assessment platforms have free trials.

Developer Assessment Software Pricing

Number of Employees

Estimated Annual Cost

1-50$1,000 - $4,500
50-200$4,500 - $8,000
200-1,000$8,000 - $30,000
1,000-5,000$30,000 - $100,000
5,000+>$100,000

Staying Organized

Are you looking at multiple tech assessment platforms?  We thought you might be!  Our recommendation is to use a structured rubric to evaluate these tools so that you can make the right decision for your business after demo’ing a few of the platforms.  We put together the below spreadsheet so that you can keep track of your key criteria when looking at these engineer hiring solutions.  Our hope is that it allows you to make the best decision for your business!

Questions to Ask on Demos

You’ll notice there are a few suggested questions in this spreadsheet already.  In addition to talking to a sales person to vet these vendors, we recommend opening up a free account to play around with the code editor.  Setup a pre-canned screen for a data scientist or programmer, and see the process they’d go through.  Then, take a look at how screen applicants are presented to your hiring team.  

How does this stack up to other online assessment platforms you’ve looked at?  Does it give you confidence you’ll be able to judge an applicant’s programming skills?  What other interview questions can you embed into these skill tests?  Make sure you think about this both from the recruiting team’s perspective, and the candidate’s.

Companies Using Tech Assessment Platforms: Andela

Andela developer tech assessment tool

Andela is a fast growing company faced with a massive challenge - how do we efficiently find and hire the top 1% of developers across Africa at scale (they get over 4,000 applicants/mo!).

Maya Neria, Senior Product Manager, was in charge of figuring out how to replace a home grown tech assessment platform that wasn’t cutting it with a solution that would mimic the real world while also providing feedback to candidates.  After demo’ing over 100 solutions, Andela selected a tech assessment platform, Qualified, and moved forward with overhauling their developer screening process.

Andela now starts their interview process by sending applicants a study packet on Python/Javascript basics, tests knowledge of this packet via a simple quiz through Google Forms, and then moves candidates into the tech assessment platform.  Currently 15% of people who pass the tech assessment are hired.  Moving to a standardized platform has allowed Andela to save time, improve the candidate experience, and create a more objective scoring rubric for future candidates.

Developer Assessment Tools FAQs

What is a developer assessment tool?

A developer assessment tool is a software platform designed to administer coding tests to candidates to see if their skills match the job reqs. 

Why use a coding interview platform?

A coding interview platform acts as a screening tool for developers. By testing different language proficiencies at the beginning of the talent acquisition funnel, hiring teams can narrow down their list of top candidates much faster. 

Can a coding interview platform help with recruiting?

Yes, a coding interview platform can greatly help recruiting efforts. In addition to saving time by pre-screening candidates, developer assessments can reduce bias by objectively testing skills, allow for remote interviewing, and give better signal on skills beyond what a resume shows. 

What different kinds of coding interview platforms are there?

There are different kinds of coding interview platforms depending on who you are interviewing. Some solutions are focused on the top 1% of software engineering talent, others offer more general coding challenges. Some focus on academic assessment, others on real world problems. It all depends on your company’s hiring angle. 

What features do technical assessment tools offer?

Some features of technical assessment tools include:

  • Testing tools for all popular coding languages
  • Interview recording
  • Video calling
  • Test customization
  • Plagiarism detection 
  • Note-taking
  • Detailed stats and reporting

Final Advice on Tech Assessment

Any company hiring more than a few engineers a year should take a look at using a tech assessment platform.  They save your engineering team time.  They lead to better hires.  And, most are very simple to do a pilot with.  You can get a 30 minute demo of one of our pre-vetted vendors to understand how this will fit into the specifics of your recruiting process:

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