Hire the Top 3% of QA Testers in 48 Hours

Toptal is a marketplace for top quality assurance testers and software testers. CEOs, CTOs, and management at top companies and startups work with Toptal QA testing freelancers to augment their development teams for app testing, integration testing, and other software testing projects to achieve their business needs.

Meet QA Testers in Our Exclusive Network

Featured Talent

Ryan Ramsey, Freelance quality assurance Developer for Hire.

Ryan Ramsey

Verified Expert in Engineering
20 Years of Experience

QA Tester

Ryan is a veteran quality assurance manual tester with extensive experience testing websites, games, apps, and content management systems. He has a strong familiarity with a wide range of mobile devices, as well as PC and Mac. An expert at test planning, test execution, and bug tracking, Ryan has the experience to ensure your project receives the test coverage it deserves.

QA TestingJiraAgile DevelopmentVideo Game TestingQA Analysis
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Javier Picon, Freelance quality assurance Programmer for Hire.

Javier Picon

Verified Expert in Engineering
13 Years of Experience

QA Tester

Javier is a QA lead with over 20 years of experience in Agile methodologies, test automation strategy, and quality assurance management. He has successfully spearheaded QA operations, established efficient workflows, and led cross-platform testing initiatives for digital products. With a proven track record of enhancing product quality, reliability, and team productivity, Javier is adept at integrating teams and optimizing test automation frameworks to meet evolving industry standards.

QA TestingWindows DevelopmentMacOSFront EndWeb DevelopmentQA Analysis
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Sebastian Ostrowski, Expert quality assurance Programmer for Hire.

Sebastian Ostrowski

Verified Expert in Engineering
19 Years of Experience

QA Tester

Since 2006, Sebastian has been working in software quality assurance, specializing in tests (automation and strategy definition). He's developed appropriate processes, prepared documentation, selected automation approaches, and implemented test automation frameworks, tests, and CI/CD integrations. In addition, Sebastian's built various automation solutions—from complicated event-driven distributed systems with microservices to web apps.

QA TestingQA AnalysisTest AutomationSeleniumQuality Assurance EngineeringAPI
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Jihye Cho, Expert quality assurance Programmer for Hire.

Jihye Cho

Verified Expert in Engineering
18 Years of Experience

QA Tester

She is a seasoned QA lead and automation engineer with extensive experience driving quality across fintech, multimedia, and enterprise B2B platforms. A specialist in building robust E2E frameworks from scratch using Cypress and TypeScript, she seamlessly bridges the gap between functional testing, API validation, and web app security. Driven by a deep sense of ownership, she excels at establishing shift-left quality cultures in fast-paced, remote environments to ensure seamless product delivery.

QA TestingSQLPostmanJiraAgile DevelopmentWeb DevelopmentQA AnalysisAPIREST API
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Jakub Obstarczyk, Freelance quality assurance Programmer for Hire.

Jakub Obstarczyk

Verified Expert in Engineering
18 Years of Experience

QA Tester

Jakub is a senior QA automation engineer with many years of experience in telecommunications and digital identity. His expertise includes Agile methodologies, test automation, quality assurance, behavior-driven development, and test planning, and he has a keen ability to transition from manual to automated testing. Jakub has designed and implemented QA testing for Mastercard, Capgemini, and several other small and midsized businesses.

QA TestingWindows DevelopmentC#SeleniumAPITest AutomationAgile DevelopmentCucumberPostmanVisual Studio DevelopmentQA AnalysisQuality Assurance Engineering
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Andrej Savcic, Freelance quality assurance Programmer for Hire.

Andrej Savcic

Verified Expert in Engineering
6 Years of Experience

QA Tester

Andrej is a quality assurance engineer with whole system development lifecycle experience. He has created and executed test plans, cases to uncover, identify, and document software problems and their cause. Andrej is passionate about every project and is always looking for ways to be even more efficient.

QA TestingJiraQA Analysis
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Stephen Jones, quality assurance Freelancer.

Stephen Jones

Verified Expert in Engineering
8 Years of Experience

QA Tester

Stephen is a software quality assurance engineer with 10 years of experience working for clients in the health and wellness, commercial storage, education, biotech, sports, cryptocurrency, and real estate spaces. He focuses on web-based and native mobile applications in iOS and Android, including Bluetooth and NFC technologies. Stephen enjoys helping projects run efficiently, improving their success, and standardizing quality assurance and project practices across the business.

QA TestingTest EngineeringQA Analysis
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Alex Pavlenko, quality assurance Engineer.

Alex Pavlenko

Verified Expert in Engineering
12 Years of Experience

QA Tester

Alex is a lead quality assurance engineer and manager with over 14 years of experience in software testing. In addition to his expertise in quality assurance, Alex has worked as a scrum master and project manager on several large-scale outsourced projects. Since obtaining his bachelor's degree, Alex has been certified as a tester and test manager by ISTQB and a scrum master by Scrum.org.

QA TestingPostmanJiraWindows DevelopmentHybrid AppAndroidiOSOracle DevelopmentQA AnalysisAPIQuality Assurance EngineeringAgile DevelopmentTest Engineering
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Serdar Fener, Freelance quality assurance Developer for Hire.

Serdar Fener

Verified Expert in Engineering
12 Years of Experience

QA Tester

Serdar is an ISTQB-certified software engineer with over a decade of SDLC experience. He specializes in software quality assurance methodologies and test automation with a variety of commercial and open-source tools. He is a bright, talented, ambitious, and self-motivated engineer with a strong technical background. Serdar has worked with notable companies such as IBM, Ericsson, and Danske Bank, with millions benefiting from his expertise.

QA TestingTest AutomationNode.jsSeleniumJavaScriptJenkinsTypeScriptGitHubQA AnalysisCI/CDQuality Assurance EngineeringPostmanAgile Development
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Sergio Ruben Silva, quality assurance Coder.

Sergio Ruben Silva

Verified Expert in Engineering
16 Years of Experience

QA Tester

Since 2007, Sergio has worked as a QA test automation engineer at a variety of companies, including EPSON Argentina, Globant, and Vista Entertainment. He's completed quality assurance tasks in a wide array of environments, including firmware for fiscal printers, web apps, web services, and desktop/mobile apps. Sergio is also comfortable creating test automation frameworks for web apps and enjoys mentoring.

QA TestingQuality Assurance EngineeringQA AnalysisSeleniumTest Automation
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Ilia Galperin, Freelance quality assurance Programmer for Hire.

Ilia Galperin

Verified Expert in Engineering
11 Years of Experience

QA Tester

For over a decade, Ilia has managed a variety of quality assurance functions, including strategy, test execution, UI, API testing frameworks, and reporting tools that provide results for stakeholders in start-ups, small, and large companies. He has a deep understanding of the software development lifecycle and the critical importance that high quality plays to the success of a project. His skills bring an added advantage to any project requiring in-depth analysis and skilful QA.

QA Testing.NETPostmanTest AutomationAPIC#SeleniumAgile DevelopmentQA AnalysisQuality Assurance Engineering
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Discover More QA Testers in the Toptal Network
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2

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Get a shortlist of expertly matched QA testers within 24 hours to review and interview.
3

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Start working with your chosen QA tester. You’ll have up to two weeks to assess the fit: Pay only if you’re satisfied.
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Our talent network is composed of thoroughly vetted professionals who ramp up quickly, function as essential team members, and deliver results.

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Precise Matching

Our experienced talent matchers specialize in identifying talent that fits your needs. They work to understand your exact requirements and hand-select the best professionals for your project.

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Seamless Hiring

We handle all aspects of billing, payments, and NDAs, streamlining the hiring process so you can focus on innovation, not overhead.

No-risk Trial Period

No-risk Trial Period

We want to be sure your engagement is a total success, so we offer a no-risk trial period. Work with your new hire for up to two weeks and pay only if you’re satisfied.

Effortless Scaling

Effortless Scaling

We help you scale your team up or down as needed, with quick and efficient hiring in under 48 hours.

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Flexible Engagements

Our flexible engagement models allow you to choose the engagement type that suits your needs and adjust it anytime: hourly, part time, or full time.

Our Developer Screening Process

26.4%Applicants Pass

Language and Personality

Toptal developers possess excellent written and verbal communication skills. We test each candidate’s ability to convey complex technical concepts clearly across multiple collaboration tools and communication mediums. We also assess personality traits, looking for candidates who are passionate and fully engaged in their work.

7.4%Applicants Pass

In-depth Skill Review

Developers are required to demonstrate their knowledge and problem-solving ability through various assessments. We evaluate candidates based on their specialized work experience and knowledge of core technical domains, such as algorithms, data structures, system design, software engineering fundamentals, and more.

3.6%Applicants Pass

Live Screening

Toptal developers are skilled at tackling complex technical challenges creatively and independently. Each candidate participates in a live screening with one of our top developers, where they must demonstrate their ability to analyze technical challenges, propose multiple solution paths, and make decisions in real time.

3.2%Applicants Pass

Test Projects

Toptal developers are required to complete a test project that reflects real client work. During this step, candidates demonstrate their ability to ideate, scope, implement solutions, and solve complex technical problems in real-world scenarios.

3%Applicants Pass

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Toptal developers are expected to maintain a strong track record while working with clients. We continuously evaluate our talent throughout engagements to ensure our high standards for excellence and performance are consistently met.

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Why Organizations Choose Toptal®

Toptal gave us access to the best designers out there, saving us a lot of time and allowing us to build the best possible product.

Thierry JakircevicGeneral Manager, Digital Solutions, Bridgestone

Toptal’s talent is really excellent. They are able to work through large business problems and code incredibly efficiently.

Emily LemonSenior Director, Cleveland Cavaliers

The kind of people we looked for were hard to find. Toptal helped us achieve our goals by bringing high quality resources to bear on very short notice.

Elmar PlatzerDigital Transformation Leader, CSR

If you’ve tried working with other vendors, Toptal is going to be a different type of company to work with; they’re going to meet you where your needs are.

Matthew SchumacherSenior Product Manager, Alpha - Precision Drilling

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