List of the Top 21 Coding Challenge Platforms for Greenhouse in 2025

CodeSignal is a platform that enables the global community to uncover and nurture the skills that will define the future landscape. With our innovative skills platform, we empower teams to overcome skills shortages by offering advanced hiring and AI-driven learning solutions, while also assisting individuals in honing the abilities necessary for their advancement. No matter your current progress or aspirations, CodeSignal's technical hiring and development solutions are tailored to support you at every stage of your journey, guiding you toward your goals and aspirations. In doing so, we aim to create a more skilled workforce ready to tackle the challenges of tomorrow.

Canditech provides a comprehensive testing platform that assesses both technical abilities and interpersonal skills through job simulation evaluations. These assessments encompass a wide range of tasks, such as coding, SQL, Excel, written communication, email correspondence, and video interactions. All evaluations are automatically scored, which streamlines the process and maintains uniformity. In addition to standard assessments, we also offer pre-screening chatbots and one-way video interviews, allowing for a more in-depth understanding of each applicant's capabilities. From the outset, our platform delivers impressive returns on investment: ✅ Cut hiring time by 50% ✅ Minimize unnecessary interviews by 80% ✅ Enhance the candidate experience ✅ Integrate seamlessly with your ATS

Woven is an automated assessment tool designed specifically for experienced developers. Rather than solely focusing on automated scoring, Woven employs certified engineers to evaluate candidates' work, enabling the incorporation of distinctive scenarios like GitHub Pull Request Reviews and Systems Design. This innovative approach significantly enhances the candidate experience for Senior Engineers, who are often in high demand, leading to a remarkable reduction in drop-off rates from 40% to 15% when compared to traditional automated assessments. By utilizing these more advanced and realistic scenarios, Woven provides a clearer prediction of candidates' success in technical screenings and final interviews, ultimately conserving valuable time for engineers. Additionally, the interview process can be streamlined by substituting lengthy take-home projects with Woven assessments, thus minimizing unnecessary steps. Furthermore, Woven distinguishes itself by offering remote proctoring for all its plans, making it the sole technical assessment platform with this feature, which is particularly beneficial for detecting potential cheating with tools like ChatGPT. This comprehensive approach not only aids in maintaining assessment integrity but also ensures that the evaluation process is as efficient and effective as possible.

AI-ENABLED SKILL EVALUATION Vervoe simplifies the process of selecting the best candidates by focusing on their performance. The AI-driven platform from Vervoe efficiently evaluates tests and organizes candidates based on their job-specific abilities. You have the option to select from a variety of industry-specific evaluations, such as video interviews, coding challenges, and competency tests, or you can design assessments tailored to your organization’s needs. Vervoe offers a user-friendly and robust solution for creating and overseeing your assessments, empowering you to make informed hiring choices with assurance. With its innovative approach, Vervoe enhances the overall recruitment experience for both employers and candidates.

Codility streamlines the hiring process, allowing for effective decision-making without unnecessary delays or stress for recruiters. By assessing candidates on their technical abilities, engineering leaders can assemble teams that are not only high-performing but also diverse. This approach ensures that the selection process is both efficient and focused on the most relevant qualifications.

TalentScore by DevSkiller stands out as the most authentic technical screening platform available today. Utilizing the innovative RealLifeTesting™ methodology, it enables precise evaluation of technical capabilities while simultaneously enhancing the candidate experience. A remarkable 94% of candidates complete the tests they begin on TalentScore, a statistic that surpasses all other technical screening solutions on the market. Currently, over 700 companies worldwide, including prominent names such as Criteo, Deloitte, PayPal, IKEA, and ING, rely on TalentScore for their technical assessments. Users of the platform can: • Conduct comprehensive remote screenings through online coding assessments • Facilitate online technical interviews and pair programming sessions to gain deeper insights into candidates' abilities • Detect potential dishonest candidates early with sophisticated plagiarism detection tools • Minimize unconscious bias by employing objective, automated test scoring TalentScore encompasses more than 200 technical skills across various domains such as front-end, back-end, full-stack, DevOps, data science, QA, and security, catering to all levels of expertise. This extensive support ensures that companies can find the right talent tailored to their specific needs.

HackerEarth offers a comprehensive technical recruitment solution tailored to assist organizations in establishing tech teams that are prepared for the future, featuring various tools aimed at technical hiring, skill enhancement, and engaging developers. Over 4,000 companies worldwide utilize HackerEarth to enhance the caliber of their engineering recruits while minimizing the time recruiters spend on candidate evaluation. Through HackerEarth Assessments, employers can pinpoint the ideal candidates by assigning programming tasks that replicate real-world job scenarios, thereby allowing you to shortlist only those applicants who align with your standards. Consequently, this platform simplifies the process of identifying top developers without overextending your resources, ensuring a smooth and efficient hiring experience. By streamlining recruitment efforts, HackerEarth ultimately empowers organizations to focus on building exceptional teams.

Reach your recruitment goals and speed up product launches with a top-notch platform for evaluating technical abilities, specifically crafted to help you find and hire skilled developers. Conventional resumes often do not accurately portray actual skills; therefore, by employing objective assessments of capabilities, you can discover candidates' strengths and weaknesses, reduce bias, and expand your talent pool, ensuring you achieve your hiring objectives. This methodology enables you to effectively filter out unqualified candidates, sparing your developers from the burden of interviewing unsuitable individuals and allowing them to focus more on product innovation. By adopting a consistent hiring framework, you can sustain quality as your team grows, elevating the talent level across your organization and attracting proficient developers. Equipped with all the essential resources for conducting impactful, real-world technical interviews that appeal to developers, you can effortlessly weave this solution into your recruitment workflow. Ultimately, this enhances not only your team's efficiency but also cultivates a more diverse and highly skilled workforce, positioning your organization for future success. With such a comprehensive strategy in place, you can ensure that your hiring process is both effective and equitable.

CodinGame, developed by CoderPad, serves as a digital platform for technical assessments that enables recruiters, technology executives, and developers to efficiently screen potential candidates early in the recruitment process. Its intuitive design appeals to both test creators and job seekers alike, making it simple to implement and adaptable to various needs. This effectiveness is reflected in its adoption by well-known companies such as Nasdaq, Huawei, and Electronic Arts, showcasing its reliability in the industry. Moreover, its flexibility allows organizations to tailor tests according to specific job requirements, enhancing the selection process.

CodeScreen serves as a platform for evaluating technical skills during recruitment. Assessing a candidate's technical capabilities can often be a difficult and lengthy process when relying solely on their CV, educational qualifications, or a brief interview. To address these challenges, CodeScreen implements realistic coding assessments that candidates can complete asynchronously, which are then automatically graded, enabling swift identification of top talent. This efficient approach not only saves time for recruiters and developers who participate in the evaluation process but also provides a deeper understanding of how candidates may perform in their prospective roles. Ultimately, this method enhances the overall recruitment experience for both employers and candidates alike.

When recruiting developers, it is crucial to adopt a careful selection process; moving away from a one-size-fits-all method can drastically cut down your screening time by utilizing automated coding assessments. This strategy enables you to identify qualified applicants based on their genuine coding skills instead of depending solely on their resumes. Rather than relying on conventional phone interviews, consider implementing pair programming to streamline and enhance the interview experience. This approach allows you to observe candidates as they code in real time, providing you with valuable insight into their problem-solving techniques. CodeInterview is a cutting-edge platform that makes technical interviews more efficient within a collaborative coding space. This online tool allows both candidates and interviewers to engage in coding challenges in real-time, using a versatile online code editor that supports all widely-used programming languages. You can execute code snippets and see outputs immediately in your browser, which removes the need for any downloads or installations. Furthermore, the platform includes integrated audio and video communication features, ensuring clear interactions with candidates during the interview process, thus enriching the overall experience. The interface is designed to be user-friendly and is equipped with helpful features like syntax highlighting and code completion, making it an essential asset for both interviewers and candidates. Engaging with this innovative tool not only boosts efficiency but also enhances the quality of your hiring process.

TestDome provides a comprehensive suite of pre-employment assessments designed for tech positions and various other fields, including programming, accounting, customer service, and project management, among others. With over 1,000 questions, our tests are crafted to evaluate candidates' abilities in addressing real-world challenges, and if you happen to find any Premium questions online, we offer a refund option. You have the flexibility to tailor our ready-made assessments to suit your specific needs or even incorporate your own custom questions. Additionally, you can easily compare candidates side by side for a quick overview, or take a closer look at the detailed results and responses from individual applicants. To enhance security, we implement measures against cheating, such as webcam monitoring, duplicate email detection, and protections against copying and pasting. Furthermore, you can invite multiple users to your account at no extra cost, making collaboration seamless and efficient. This allows for a more comprehensive evaluation process, ensuring you find the best candidates for your team.

CoderPad serves as a comprehensive platform for conducting technical interviews while also supporting the leadership of development teams. It facilitates the quick and precise evaluation of candidates' skills, functioning as an integrated development environment (IDE) that allows applicants to showcase their abilities and gives interviewers insight into their working methods. Available throughout the entire hiring journey, CoderPad supports both collaborative coding interviews and take-home projects, ensuring a seamless experience. Focused on enhancing the developer experience, it boasts a fast, dependable interface that is user-friendly. Customization of the interview process to meet the specific requirements of various teams is a key feature, recognizing that each team and candidate has distinct needs and expectations during recruitment. With CoderPad, organizations can expedite the search for top technical talent, creating a rewarding experience for both candidates and interviewers alike. The platform is designed to scale effortlessly as your team expands, making it a preferred choice among close to 2,000 companies across the globe. Ultimately, CoderPad not only streamlines the hiring process but also fosters a collaborative environment that benefits everyone involved.

Transform your recruitment strategy with Take-Home Coding Assessments that prioritize practical skills over conventional puzzles. With the CodeSubmit platform, you can identify outstanding talent as candidates engage in real-world scenarios that reflect their capabilities. By offering authentic engineering projects that candidates can complete at their convenience, you foster a more genuine assessment of their skills. CodeSubmit provides an extensive library of real-world assignments, a seamless candidate experience, and in-depth analytics to enhance your hiring efforts. Furthermore, you have the option to upload custom tasks, collaborate with your team for a more refined hiring process, and utilize evaluation tools that promote fairness and consistency across all candidates. This platform also boasts a plethora of additional advantageous features to streamline your recruitment. To kickstart your journey, CodeSubmit offers a vast library filled with carefully crafted tasks across more than 60 programming languages and frameworks, allowing you to design a custom assignment in under a minute. Whether you are an experienced user of take-home assessments or just starting to consider this approach, CodeSubmit stands ready to assist you throughout the entire process, ensuring you successfully find the perfect addition to your team. In a competitive job market, adopting innovative recruitment methods can significantly improve your chances of attracting top-tier talent.

GigaMe emerges as the leading platform tailored for Front end/UI developers who seek to refine their interview skills and maximize their chances of landing job offers. Our materials are crafted to not only enhance the effective application of your current skills but also to expand your technical knowledge base. You will refine your deep understanding of JavaScript coding into precise and well-organized solutions. We provide clear and accessible techniques for addressing challenges associated with Object-Oriented JavaScript, as well as data structures and algorithms. By mastering progressive enhancement strategies and utilizing the features of HTML5 and CSS3, you will gain insight into the latest functionalities that allow for the development of dynamic single-page applications. Furthermore, we explore important ReactJS concepts such as Higher-Order Components, state management, the Hooks API, reusable components, and ReduxJS, all supported by practical examples and solutions. Our comprehensive database features over 500 authentic technical interview questions, coding challenges, and their solutions, ensuring you are completely equipped for any interview situation. With GigaMe, you can approach every interview with assurance and preparedness, ready to tackle any question or challenge presented to you.

Fairlane simplifies the assignment of take-home coding challenges to applicants, allowing you to reduce the length of phone screenings while offering a more genuine assessment experience. Your engineering team often faces challenges with traditional phone interviews, such as candidates missing appointments and experiencing technical difficulties, which can hinder their productivity. Moreover, candidates often find it hard to demonstrate their abilities in unfamiliar settings, leading to unclear insights from these interviews and complicating decision-making. By utilizing Fairlane, you can conveniently send candidates a link to a take-home challenge, providing them with time-sensitive access to their own GitHub repository. This flexibility allows candidates to work in their preferred integrated development environment (IDE) and utilize tools they are comfortable with, fostering a more effective working atmosphere. Additionally, candidates can take advantage of all the necessary integrations you've established for the challenge, including automatic test executions triggered by GitHub actions whenever they make commits. Once they finish their tasks, you'll receive notifications in Greenhouse that indicate the results are ready for your review, greatly streamlining the evaluation process. This modern method not only improves the overall candidate experience but also facilitates more precise evaluations of their skills, ultimately leading to better hiring decisions. Embracing this innovative approach can significantly enhance your recruitment process and lead to the identification of top talent.

Thanks to DoSelect’s vast repository, which features over 50,000 questions spanning more than 25 programming languages and various domains such as full-stack development, AI/ML, data science, databases, automation testing, and aptitude, recruiters can swiftly create assessments to evaluate thousands of candidates. The robust evaluation engine meticulously analyzes skill quality, allowing for the effective refinement of the candidate pool based on essential insights tailored to specific job requirements. This assessment engine is a powerful tool for leaders in learning and development as well as training managers, enabling organizations to curate a detailed skill inventory through hands-on tests and authentic evaluations that align closely with the competencies necessary for success. By simplifying the process of identifying training needs and expediting resource allocation, organizations can significantly enhance project outcomes and overall business performance. Furthermore, the platform not only streamlines the recruitment process but also cultivates a culture of ongoing learning and skill development among teams, ultimately fostering a more competent workforce. This commitment to continuous improvement can lead to increased innovation and adaptability within the organization.

iMocha provides a comprehensive platform designed for organizations to adopt a "Skills-First" approach through its advanced, patented, and AI-driven Skills Assessment and Skills Intelligence Platform, catering to both Talent Acquisition (for Full-Time Employees and Contingent Workers) and internal Talent Development and Management. Among its diverse global clientele are prominent names like Deloitte, PayPal, Cap Gemini, E&Y, Reveture, Ericsson, Aston Martin, Vanguard, 711, Telstra, Daimler Trucks, ABSA SA, Avayya, and nine different United Nations agencies. With over 500 customers spanning three continents (North America, UKI/EMEA, and India/APAC), iMocha supports 30 companies from the Fortune 500 in actualizing their "Skills-First" strategy, alongside more than 300 Mid-Market organizations that have fewer than 5,000 employees. As an SAP Strategic partner, iMocha maintains bi-directional integration with SAP SuccessFactors and SAP Fieldglass, enhancing its service offerings. Additionally, the company collaborates with other key technology and Global System Integrator partners, including PWC, AMS, Reveture, Quantum Works, Bryq, and Alert Enterprise, among others. Notably, PWC in the UKI and EMEA regions provides iMocha's "Skills-First" solution to its clients through a strategic and exclusive joint business venture, further solidifying iMocha's reputation as a leader in the skills assessment domain.

Uncover an exceptional platform for coding challenges aimed at evaluating expertise in machine learning, data science, and software engineering. AdaptiLab enables you to easily design a challenge that aligns with your specific job needs in just a few simple steps. The platform automatically notifies candidates, allowing them seamless access to the coding challenge. By using AdaptiLab, you can improve your hiring process by assessing leading candidates based on their performance in these tailored challenges. Our evaluations concentrate on the most complex skill sets while ensuring a candidate-first experience. Each challenge is crafted by our unique AI, perfectly customized to match your job description, which guarantees a comprehensive assessment of candidates in essential areas like machine learning and data science. Furthermore, you can enhance your existing interview process with a robust library of over 1000 questions that focus on industry-relevant machine learning and data science subjects. Incorporating AdaptiLab into your recruitment strategy will not only streamline your hiring efforts but also help you efficiently identify the most suitable talent for your organization. Plus, the user-friendly interface ensures that both candidates and recruiters enjoy a smooth experience throughout the evaluation process.

Filtered serves as a comprehensive platform designed specifically for hiring in the realm of emerging technologies. It assists businesses in navigating the complexities of tech recruitment by evaluating candidates based on their capabilities, ensuring a better alignment with the job requirements and team dynamics. This innovative tool uncovers hidden insights from applicants and assesses their compatibility with your organizational objectives. Users have the option to select from various project-oriented templates or tailor their own hiring processes. Additionally, you can efficiently enhance your workflow by simply copying and pasting your job description for automated processes. The platform offers a single, intuitive interface where you can categorize, share, assess, update statuses, and comment on candidate evaluations. Furthermore, it facilitates the scheduling and execution of second-round interviews through tools for scheduling, video-based live coding sessions, and whiteboarding. All relevant information can be seamlessly communicated to candidates, enhancing their experience during the hiring process. This ensures a streamlined approach to tech hiring that prioritizes both candidate evaluation and organizational needs.

Talent Titan's innovative software-as-a-service (SAAS) and comprehensive recruitment and training solutions are transforming the way hiring and workforce development are approached. With automated features for attracting candidates, gamified assessments, AI-driven screening, and enhanced candidate engagement, Talent Titan integrates these elements to optimize the talent attraction journey. As a result, recruitment teams globally can identify more exceptional candidates than ever before. Additionally, our distinctive training solutions empower organizations to effectively train their remote workforce in a consistent, scalable manner that meets their needs. Our platform serves as a bridge connecting job seekers with prestigious organizations through exclusive hiring initiatives, granting them first access to high-paying job opportunities. By joining us, you will discover an advanced approach to scalable hiring, effective employee training, and fostering a vibrant workplace culture that drives success. Ultimately, this innovative ecosystem not only enhances recruitment but also nurtures the overall development of the workforce.