Top 10 Selenium testing companies in 2026

This guide presents a curated list of the top 10 independent global QA firms where Selenium is not just supported, but central to their automation practice. Whether you’re scaling from manual to automated testing or modernizing a legacy suite, these providers offer deep Selenium engineering, proven frameworks, and strong client outcomes across industries.

Our evaluation focuses on technical depth, domain focus, and verified client success, helping you identify the right partner for high-impact, scalable Selenium test automation.

Methodology

Vendors were assessed across seven dimensions:

Data was gathered from company websites, case studies, review platforms, and technical blogs. Rankings favored demonstrated Selenium success, engineering maturity, and verified client impact.

Top 10 Selenium testing companies

1. DeviQA

Headquarters: Warsaw, Poland (originally Ukraine)

Founded: 2010

Employees: 250+

Certifications: ISO 27001, ISO 9001:2015, ISO/IEC 20000‑1, SOC 2

Delivery model: QA outsourcing, QA staff augmentation, managed testing, QA consulting, QA as a Service

Client segments: tech startups, mid-sized business

Recognized clients: Abbott, Tipalti, Oura, Compass

Company LinkedIn: https://www.linkedin.com/company/deviqa/

DeviQA is a QA services firm focused heavily on test automation, with Selenium as a core component of its offering. Their engineers specialize in building robust, scalable Selenium frameworks using Java, Python, and C#, along with tools like TestNG, JUnit, Selenide, and Allure for reporting. They support CI/CD with GitHub Actions, GitLab CI, and Jenkins, and frequently deploy tests on Selenium Grid or cloud services like LambdaTest and Sauce Labs.

Clients consistently cite DeviQA’s reliability, quick onboarding, and test depth. One review noted, “They ramped up fast and delivered a Selenium suite that replaced 90% of our manual regression with stable, maintainable tests.” Their ability to handle test architecture, flakiness, and parallel execution makes them a smart fit for teams that want to transition from manual testing or modernize outdated automation frameworks.

2. Qualitest Group

Headquarters: Austin, Texas, USA

Founded: 1997

Employees: 4,200+ globally

Certifications: ISO 9001, ISO 27001

Delivery centers: USA, UK, Israel, Romania, Mexico, Portugal

Client segments: Enterprise, Fortune 500, Tech Startups

Recognized clients: Microsoft, Credit Suisse, Walmart, Google

Company LinkedIn: https://www.linkedin.com/company/qualitest/

Qualitest is the world’s largest independent QA and software testing company, delivering advanced test automation solutions with Selenium as a core framework. Their proprietary automation accelerator, QualiFrame, is built on Selenium WebDriver and enhanced with technologies like Java, C#, TestNG, and Selenide. Qualitest regularly implements Selenium Grid and cloud execution platforms such as LambdaTest, BrowserStack, and Sauce Labs to support scalable parallel testing. Integration into CI/CD pipelines via Jenkins and Azure DevOps enables high-frequency regression cycles, critical for agile DevOps teams. The company’s deep domain knowledge spans finance, healthcare, eCommerce, telecom, and enterprise SaaS, with tailored QA accelerators for each sector.

Client reviews emphasize their expertise in Selenium architecture and measurable outcomes. A healthcare client shared on Clutch, “They built a scalable Selenium framework that reduced our regression testing from four weeks to under two days. Their ability to integrate test automation into our CI/CD pipeline was key to accelerating our release cycles.” Another client praised, “Qualitest’s engineers didn’t just execute tests; they architected a robust Selenium suite that improved our coverage and stability by over 50%.” Their proven ability to modernize legacy frameworks, enhance release confidence, and scale automation for enterprise systems positions Qualitest as a top-tier choice for Selenium-driven QA partnerships.

3. QualityLogic

Headquarters: Boise, Idaho, USA

Founded: 1986

Employees: ~200 (100% onshore, USA-based)

Certifications: ISTQB-certified engineers

Delivery model: Onshore dedicated teams

Client segments: Mid-size tech companies, utilities, healthcare, media

Recognized clients: Verizon, Tubi, Disney, Aclara, Tigo Energy

Company LinkedIn: https://www.linkedin.com/company/qualitylogic/

QualityLogic is a U.S.-based software quality assurance company recognized for its fully onshore testing model and deep specialization in Selenium-driven test automation. Selenium WebDriver serves as a cornerstone of their automation toolkit, often used in conjunction with Java, JavaScript, TestNG, and CI/CD integrations like Jenkins. QualityLogic builds maintainable test architectures tailored to Agile workflows, and integrates Selenium suites directly into clients’ pipelines for regression testing and cross-browser testing. They also support “scriptless” automation for clients with low-code preferences, while offering full-stack engineering depth when custom frameworks are needed.

Clients consistently praise QualityLogic’s test reliability, responsiveness, and technical rigor. One Tubi executive shared via Clutch, “They helped us build a robust Selenium automation suite that was pivotal to meeting our aggressive release targets. We wouldn't have hit our goals without them.” Another client, in the energy sector, stated, “QualityLogic delivered test automation that was 100% aligned with our CI process and worked flawlessly across Chrome, Safari, and Firefox. Their team felt like an in-house extension.” Their niche strength in smart energy, healthcare, and media platforms, paired with 100% U.S.-based QA engineers, positions them as a high-trust Selenium partner for companies prioritizing close collaboration, low overhead, and expert-level stability in test automation.

4. QASource

Headquarters: Pleasanton, California, USA

Founded: 2002

Employees: 1,000+ globally

Certifications: ISO 27001, SOC 2 Type II

Delivery model: Hybrid (U.S. project leads + offshore teams in India & Mexico)

Client segments: Enterprise, startups, tech platforms

Recognized clients: IBM, Oracle, Target, eBuddy, GoDaddy

Company LinkedIn: https://www.linkedin.com/company/qasource/

QASource is a global QA services provider with deep specialization in Selenium-based test automation. Selenium WebDriver, Grid, and complementary tools like TestNG, JUnit, and Appium form the foundation of their automation frameworks. Their engineers use Java, C#, and Python to build modular test suites and integrate them seamlessly into CI/CD pipelines using Jenkins, GitHub Actions, and GitLab CI. The company offers dedicated automation pods that combine Selenium scripting with AI-powered enhancements like self-healing locators, test data generators, and custom reporting layers. QASource’s teams also implement Dockerized Selenium Grid for scalable, parallel execution and frequently use BrowserStack and Sauce Labs for cross-browser testing.

Clients highlight both technical delivery and cultural alignment. A CTO from a financial services firm shared via Clutch, “QASource’s automation team built over 500 Selenium scripts that reduced our regression suite from three days to six hours. Their CI integration helped us move to nightly builds with confidence.” Another client from a SaaS platform noted, “They’re not just executing tests, they’re thinking two steps ahead in the architecture. Their Selenium work improved our test coverage and system stability significantly.” QASource’s ability to blend senior offshore talent with responsive U.S.-based leads makes it a strong partner for teams scaling automated QA without sacrificing speed or quality.

5. QA Mentor

Headquarters: New York City, USA

Founded: 2010

Employees: ~300 globally

Delivery model: Global hybrid (USA, Ukraine, UK, India)

Client segments: Startups, mid-size firms, Fortune 500

Notable clients: Sony, BOSCH, DHL, Bank of America

Company LinkedIn: https://www.linkedin.com/company/qamentor/

QA Mentor is a multi-service QA firm that positions Selenium at the center of its automation offerings. Their proprietary Selenium-based automation framework incorporates data-driven and keyword-driven approaches, built with Java, TestNG, and maintained through CI tools like Jenkins and Bamboo. They provide end-to-end regression, cross-browser, and mobile testing via Selenium Grid and often pair Selenium with Appium for hybrid automation strategies. Their framework is designed for modularity, easy scaling, and integration into Agile pipelines.

Clients have commended their flexibility and speed. One Clutch reviewer remarked, “They provided a full automation team that ramped up within days and delivered a stable Selenium suite that cut our manual testing in half.” QA Mentor’s wide domain reach, automation reusability, and structured methodology make them a reliable choice for companies looking to mature their automation practices with Selenium as a core.

6. TestingXperts

Headquarters: Harrisburg, Pennsylvania, USA

Founded: 2013

Employees: ~1,000 globally

Certifications: ISO 27001, ISO 9001

Delivery model: Onshore, nearshore, and offshore (USA, UK, India, Netherlands)

Client segments: Enterprises and digital product companies

Recognized clients: AXA, Virgin Media, Mastercard, Informa

Company LinkedIn: https://www.linkedin.com/company/testingxperts/

TestingXperts delivers end-to-end QA services with a strong emphasis on Selenium as its primary automation engine. Their open-source driven approach uses Selenium WebDriver with Java, C#, or JavaScript, augmented by TestNG, JUnit, BDD (Cucumber), and integration into CI/CD tools like Jenkins, Azure DevOps, and Bamboo. Their custom framework, Tx-Automate, supports modular, scalable Selenium test execution across browsers and platforms, with parallel test capabilities via Selenium Grid and cloud providers such as BrowserStack.

Clients have noted significant efficiency gains through TestingXperts' automation services. In reviews, clients report regression cycles reduced by up to 80%, and improved stability across frequent releases. One reviewer wrote, “Their Selenium suite helped us catch bugs early, and we saw a massive reduction in post-production defects.” With strengths in BFSI, healthcare, telecom, and retail, TestingXperts is a forward-leaning partner for organizations looking to modernize QA with a proven Selenium-centered approach.

7. a1qa

Headquarters: Lakewood, Colorado, USA

Founded: 2003

Employees: ~1,000

Certifications: ISO 9001, ISO 27001

Delivery model: Global (USA, UK, Netherlands, Eastern Europe)

Client segments: Enterprises, tech firms, ISVs

Recognized clients: Pearson, adidas, SAP, Yandex

Company LinkedIn: https://www.linkedin.com/company/a1qa/

a1qa is a long-established QA vendor with a strong engineering focus and extensive experience in Selenium-based test automation. Their teams build tailored frameworks using Selenium WebDriver (Java, C#, Python), often integrated with TestNG or NUnit, and supported by CI/CD pipelines using Jenkins, TeamCity, and Azure DevOps. For scalability, they use Dockerized Selenium Grid and Selenoid for efficient parallel execution.

Clients praise a1qa for technical depth and process maturity. A frequent comment is that their teams “integrate seamlessly with internal dev squads and deliver stable, reusable Selenium suites that dramatically reduce testing time.” With experience in industries like finance, telecom, ecommerce, and healthcare, a1qa is especially well-suited for large-scale, structured automation initiatives that require disciplined framework design and long-term scalability.

8. Solvd, Inc.

Headquarters: Roseville, California, USA

Founded: 2011

Employees: ~800

Certifications: ISO 27001

Delivery model: Global (USA, Argentina, Poland, Ukraine, Georgia)

Client segments: Tech startups, enterprise SaaS, eCommerce, fitness, media

Recognized clients: MyFitnessPal, NerdWallet, Under Armour, Reddit

Company LinkedIn: https://www.linkedin.com/company/solvdinc/

Solvd is a software engineering and QA company with deep technical roots in test automation. Selenium is a central pillar in their QA stack, particularly through their open-source Carina framework, which integrates Selenium, Appium, and TestNG into a unified, scalable test platform. Solvd also offers test analytics via their proprietary platform Zebrunner, which tracks Selenium test execution in real time and enhances reporting.

Clients often highlight Solvd’s dual strengths in engineering and QA. One reviewer commented, “Their Selenium test suite helped us automate over 90% of regression flows and integrate fully into our CI/CD cycle.” Solvd is a good fit for companies needing robust test infrastructure, tight integration between dev and QA, and high-volume Selenium execution with CI visibility.

9. QATestLab

Headquarters: Cyprus (operations in Ukraine and Poland)

Founded: 2005

Employees: ~250–300

Certifications: ISO 27001

Delivery model: Eastern European outsourcing with global availability

Client segments: ISVs, gaming, ecommerce, healthcare, travel, education

Recognized clients: Shell, G5 Games, Yandex (under NDA with many others)

Company LinkedIn: https://www.linkedin.com/company/qatestlab/

QATestLab is a pure-play QA provider offering flexible engagement models and strong Selenium expertise. Their engineers build test automation using Selenium WebDriver with Java or Python, using frameworks like TestNG and JUnit. They integrate automation into Jenkins or Bamboo pipelines and support scalable testing via Selenium Grid or cloud platforms. Their broad browser/device lab (400+ combinations) allows for cross-browser and responsive UI testing.

Clients value their scalability and speed. One client shared, “QATestLab spun up a Selenium team within a few days and delivered a full regression suite that replaced weeks of manual testing.” Their combination of affordability, fast onboarding, and technical reliability makes them a solid choice for startups or mid-size software firms looking to implement or expand Selenium automation quickly.

10. TestMatick

Headquarters: New York, USA

Founded: ~2009

Employees: ~50–100

Certifications: Internal QA standards, ISTQB-certified engineers

Delivery model: Distributed team with US and Eastern European presence

Client segments: Startups, SMBs, enterprise platforms

Recognized clients: Not publicly disclosed (under NDA), serves clients in finance, e-learning, healthcare

Company LinkedIn: https://www.linkedin.com/company/testmatick/

TestMatick is a focused QA services provider with strong capabilities in Selenium test automation. Their team builds and maintains Selenium-based frameworks using Java or Python, often applying Page Object Model and integrating with TestNG, Cucumber, and CI/CD tools like Jenkins. They run automated tests across browsers using Selenium Grid or third-party platforms such as BrowserStack.

Clients appreciate TestMatick’s responsiveness and technical control. One reviewer commented, “They helped us move from zero to over 80% test automation in a few months using Selenium, we now release faster and with fewer bugs.” Their lean team size, structured QA process, and free pilot offer make them an attractive option for companies looking to start or scale Selenium automation without heavy overhead.

Conclusion

Selenium gives you the power to automate, but the real magic happens when it's in the hands of teams who know how to wield it. The QA firms you've seen here don’t just run tests, they engineer trust, stability, and speed into your product. That’s the difference between shipping fast... and shipping right.

A few tips before you choose:

• Don’t hire a vendor. Hire a partner. Look for teams that think with you, not just for you.

• Frameworks matter. Ask how they build, maintain, and evolve their Selenium architecture.

• Outcomes over hours. Focus on what they’ve delivered, faster regressions, fewer bugs, cleaner pipelines.

• Scalability wins. Your automation needs will grow. Make sure their team can grow with you.

The best QA partners don’t just automate tests. They help you deliver better software, every single time.