Hire the Top 3% of Freelance Contract Testers

Toptal is a marketplace for dedicated Contract Testers. Top companies and startups choose Toptal Contract Testing freelancers for their mission-critical development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance Contract Testers

Arpan Buch

Freelance Contract Tester
CanadaToptal Member Since March 24, 2022

Arpan is a permanent resident of Canada and has around 10 years of experience as a software development engineer in test (SDET). He is an expert in front-end and back-end engineering and test automation with high prowess in the technological stack. Arpan loves building test automation frameworks from scratch and training teams to work on the test automation frameworks. A diligent engineer, he is passionate about sharing his knowledge about test automation.

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Constantin Michael Weisser

Freelance Contract Tester
BrazilToptal Member Since November 15, 2022

Michael is a DevOps engineer and consultant who has worked as a developer, architect, team lead, and consultant for the last seven years. Specializing in automation engineering, continuous delivery, QA automation, and infrastructure engineering, he is passionate about building great products with great teams using modern technology. Michael is a methodic problem solver, experienced in managing trade-offs and building efficient and future-proof solutions.

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Phil Schanely

Freelance Contract Tester
United StatesToptal Member Since August 10, 2022

Phil is a full-stack engineer and architect with 20 years of experience taking novel systems from design to launch, whether they are performing natural language analysis for a startup or processing trillions of data updates for Google Maps. Building a successful system is not a purely technical endeavor; Phil's track record is critically supported by his consensus-building skills and thorough comprehension of business objectives.

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Oleg Glagovskiy

Freelance Contract Tester
PortugalToptal Member Since June 2, 2021

Oleg is a well-rounded professional with 12+ years of experience in a wide range of tech roles, from DevOps engineer, software engineer, QA engineer, and tech lead to engineering manager, head of QA, product manager, software architect to even CTO. He is proactive, reliable, and sincere, with an own-it mentality. Oleg is comfortable with any technological stack, ramping up quickly and picking up things blazingly fast.

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Abuzar Hasanov

Freelance Contract Tester
AzerbaijanToptal Member Since May 20, 2022

Abuzar is a back-end developer with 10+ years of experience in all phases of the software development lifecycle. He excels in C#, SQL and NoSQL, ASP.NET Core, Azure, microservice architecture in the Agile development process, design patterns, data structures, algorithms, and asynchronous programming. Abuzar enjoys solving problems while delivering outstanding software products to end-users.

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Mario Fernandez

Freelance Contract Tester
GermanyToptal Member Since March 9, 2021

Mario develops software for a living, and then he goes home and continues thinking about software because he just can't get enough. Mario is a full-stack engineer with infrastructure skills. He has extensive experience as a tech lead and has led Agile teams, been an individual contributor, drove architecture topics, and coached others. He believes in high-quality software and advocates for continuous delivery, TDD, and quick iteration.

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Arun Sridharan

Freelance Contract Tester
IndiaToptal Member Since September 23, 2022

Arun is a quality engineering manager with 14+ years of experience, over five of which are managing teams. With an extensive background in implementing quality engineering and shift-left testing practices, API testing with Postman, web automation with Selenium WebDriver, and mobile automation with Appium, he has built different automation frameworks using structural design patterns. Arun is also experienced in CI/CD using AWS CodeBuild, Jenkins, and GitHub Actions.

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Duncan Thomas

Freelance Contract Tester
IrelandToptal Member Since October 28, 2020

Duncan is a senior back-end developer with experience ranging from low-level Kernel device drivers to storage stack design and development, networking, micro-services, and API creation. He was a founding member of the Openstack block storage (Cinder) project, has helped build and run some of the largest supercomputers in the world, and been a key member of the operations team of a leading commerce platform, among other jobs.

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Andreas Markussen

Freelance Contract Tester
DenmarkToptal Member Since October 19, 2021

Andreas has a software engineering and a business management degree. He has experience in the software industry and with leading consulting companies helping teams with quality assurance in the modern days of DevOps. Andreas has skillfully strategized, taught, planned, developed, reviewed, and followed up. The feedback he receives is that he is a good communicator and can motivate teams to excel.

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Bruno Nogueira Tineli

Freelance Contract Tester
BrazilToptal Member Since February 7, 2022

Bruno has over a decade of experience working on software and quality testing, including Agile, testing techniques, exploratory testing, test automation, performance testing, CI/CD, and more. He believes in team collaboration, responsible individuals, ownership, clear goals, and the freedom to achieve high-standard results in modern software development. In Bruno, you will find a creative software tester eager to improve your products from the earliest stages of development.

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Simon Stratton

Freelance Contract Tester
United KingdomToptal Member Since May 21, 2019

Simon has been a technical tester for over 18 years. He started at IBM, moved to EADS, then Fujitsu, and now runs his own company providing specialist IT training, and hands-on consultancy. He has created test automation frameworks in Java, JavaScript, TypeScript, and .NET. Simon has also built applications using TDD (Test Driven Development), and BDD (Behavior Driven Development) techniques.

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Toptal in the press

... allows corporations to quickly assemble teams that have the right skills for specific projects.

Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.

Our clients
Creating an app for the game
Conor Kenney
Creating an app for the game
Leading a digital transformation
Elmar Platzer
Leading a digital transformation
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
Drilling into real-time data creates an industry game changer
Drilling into real-time data creates an industry game changer
Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley


The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller


Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik


As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee


How to Hire Contract Testers Through Toptal


Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right Contract tester for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new Contract tester for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.


  • How are Toptal Contract testers different?

    At Toptal, we thoroughly screen our Contract testers to ensure we only match you with talent of the highest caliber. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. You’ll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expert vetted talent from our network, custom matched to fit your business needs.

  • Can I hire Contract testers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with a Contract tester within 48 hours of signing up.

  • What is the no-risk trial period for Toptal Contract testers?

    We make sure that each engagement between you and your Contract tester begins with a trial period of up to two weeks. This means that you have time to confirm the engagement will be successful. If you’re completely satisfied with the results, we’ll bill you for the time and continue the engagement for as long as you’d like. If you’re not completely satisfied, you won’t be billed. From there, we can either part ways, or we can provide you with another expert who may be a better fit and with whom we will begin a second, no-risk trial.

Tap Into World-Class Talent

  • Trusted Experts Only

    Trusted Experts Only

    All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

  • The Right Fit

    The Right Fit

    We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.

  • Scale as Needed

    Scale as Needed

    Hire talent within 48 hours and scale your team up or down as needed, no strings attached.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.

  • Flexible Engagements

    Flexible Engagements

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Top Contract Testers Are in High Demand.

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