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Software Functional Testing Services

Ensure your product is flawless by eliminating any issues before the release with our functional testing services. Our engineers build a carefully planned testing strategy for every project with end-users needs in mind.

  • microsoft
  • mongoDb
  • aws
  • 100+

    Delivered projects

  • 19+

    Years of business excellence

  • 4.9

    Review rate on Clutch

  • clutch reviews

Why Choose Binary for Functional QA Services


Team of top talents

We are proud to unite the top 0.5% of engineering talents hired through a careful selection process. Our functional testing company regularly invests in internal training programs to adopt the latest best practices and approaches.

Broad range of QA services

We offer all the core quality assurance services required to build and release robust products. In addition to functionality testing, Binary Studio offers manual, automation, platform-specific, performance, and API tests.

Comprehensive testing strategy

We take a strategic approach to software testing, outlining objectives, high-risk scenarios, clear scope, and goals for every project. Our company adopts testing from the early product development stages to ensure the ultimate quality of the delivery.

Full-cycle development

We can develop software solutions from scratch or provide specific engineering services for existing products. Order functional testing as a service or get it as a part of end-to-end product development.

Agile methodology

We follow Agile principles in our functional testing service to ensure transparency, regularity, a continuous iterative approach, and readable documentation. This guarantees efficient software development and testing and gives our customers more control over the process.

Quick hiring and integration

With a talent pool of over 160 tech professionals, we can set up a QA team in up to 4 weeks. Binary Studio will also help you integrate QA specialists into your existing engineering team and processes for smooth cooperation.

Our Functional Testing Services


Smoke testing

Let us check whether the core app features work properly after deploying a new build or software version. It will help detect and fix significant issues at the early software development stages.

Integration testing

Verify how various software modules and components interact to ensure they operate as expected when connected to a large system. These functional tests are essential to detect troublesome behavior in multi-component solutions.

Unit testing

Build reliable apps with high-quality code thanks to unit testing. We will adopt automated tests to check individual components of your application and ensure that each behaves as designed.

System testing

Take a comprehensive approach to software functional testing by evaluating whether your app meets specific requirements as a single system. We will detect any issues and discrepancies with real-world usage simulations.

Sanity testing

Ask us to run a sanity check to verify whether the core software functionality works correctly even after a slight change. This type of regression testing is crucial for spotting unexpected problems after updates.

User acceptance testing

Double-check every detail before the release with user acceptance tests. We will test your app in a real environment to gather user feedback and make final enhancements and fixes.

Proven excellence of services

Our company encourages continuous learning and invests in additional training for our team to keep our finger on the pulse of innovations. Our functional testers and team members are top professionals in their respective fields who regularly bring us recognition and industry awards.

How We Provide Software Functional Testing Services

Our QA team applies state-of-the-art functional testing practices for products we develop or provide testing services for using these steps:

Icon Icon Icon Icon
1 Requirements analysis Our specialists communicate with your BA, developers, and other team members to clarify your requirements. We then estimate the project's scope and draft the test strategy. 2-3 weeks
Team member Team member

Head of PMO

Delivery Manager

2 Project start We assemble a QA team or provide the necessary specialists to extend your team depending on the cooperation model. It usually takes around 3 weeks to kick off the project. 3-4 weeks
Team member

Testing Team

3 Test planning and design Our testers finalize the functional testing plan and write test cases and checklists accordingly. We aim to create tests that cover all test cases you identified. 3-4 weeks
Team member

Testing Team

4 Test execution and reporting We follow the initially approved plan, using the prepared test environment and data. You get regular reports on executed tests, results, and detected defects. 1+ month
Team member

Testing Team

Want to make product release successful?

We know how. Contact us for a free consulting session to learn how functional testing can benefit you.

Case Studies

Learn how our QA team ran functional testing and other types of tests within software development projects Binary Studio worked on.

Benefits of Functional Testing


Early bug detection

Many functional testing techniques focus on detecting discrepancies and bugs at the early stages of software development. Eliminating such issues right away saves the time and effort you would waste fixing them later.

Enhanced user experience

Since software functional testing services check software from the user's perspective, they are crucial to designing applications with convenient navigation and clear logic. With functional tests, you can achieve outstanding user experience and satisfaction.

Improved application stability

Functional and regression tests ensure code changes and updates don't harm existing functionality, increasing your app stability. They can also detect security issues like input validation or authorization problems.

Real-life scenarios

Our functional testing company runs tests on devices and applies real-life scenarios to simulate user paths and behavior. It gives you a unique opportunity to remove every flaw before the release.

Extensive testing

Functional tests are performed across all stages of the engineering cycle at different software levels, from smoke testing to user acceptance. Such comprehensive testing lets you detect even minor issues for guaranteed final quality.

Successful release

Functionality testing services detect bugs before software release, allowing you to avoid unexpected downtime or malfunctions when the product goes live. The timely testing saves your reputation and helps avoid financial losses.

Looking for functional testing services?

With a team of 160+ tech professionals, we can assign dedicated QA engineers to work on your project in weeks.

What our clients say

One thing that continues to impress us is the exceptional quality of engineers that Binary Studio is able to provide us
Mark Volkmann - CEO /
Massage Book
Binary Studio has really been pivotal in FanAngel's success
David Burton - CEO /
Binary Studio is an ideal software development partner and our experience working with them has been fantastic
Pascal Desmarets - Founder & CEO /
Mark Volkmann
Mark Volkmann
CEO / MassageBook
Charleston, SC Charleston, SC
David Burton
David Burton
CEO / FanAngel
San Luis Obispo, CA San Luis Obispo, CA
Pascal Desmarets
Pascal Desmarets
Founder & CEO / Hackolade
Brussels, Belgium Brussels, Belgium


  • When is functional testing required?

    Functional testing is an integral part of the software engineering process, so you must apply such tests for every solution developed. They are useful to detect bugs at different stages, from early deployment to new feature releases.

  • What are the benefits of functional testing?

    Functional tests improve your software's quality and bring multiple business benefits. You avoid financial losses due to early bug detection and increase user satisfaction through a smooth in-app experience.

  • What types of functional tests do you run?

    The Binary Studio team performs all core types of functional tests, including smoke tests, integration tests, unit tests, system tests, sanity tests, and user acceptance tests.

  • Do you run other types of tests besides functional?

    Yes, functional testing is only one type of test our QA engineers use to validate the quality of developed solutions. We also offer automation, manual, platform-specific, performance, and API testing.

  • Can I request a consulting session before using your services?

    Yes, we offer free consulting sessions with our QA specialists. Our experts will analyze your testing needs and provide a rough strategy for solving them. You can book a meeting directly on the website.

  • Do you work with remote engineering teams?

    Yes, we provide our services globally. Suppose you operate from the US, you don't need to hire a functional testing company in the USA — you can hire Binary Studio to assemble a remote QA team for you.

  • Do you provide functional testing as a separate service?

    Yes, our team can check and evaluate existing applications, offering quality assurance as a separate service. For software solutions Binary Studio develops from scratch, we always run functional and other types of tests.

  • How fast can you provide QA engineers for my project?

    Once we analyze your requirements and sign a contract, it takes, on average, 3-4 weeks to assign QA engineers with relevant qualifications to work on your project.

  • What is the cost of functional testing?

    The cost of functional tests depends on the scope of your project and the complexity of the software. You can get a quote by filling out a contact form or scheduling a free consulting session on our website.

  • What functional testing process do you follow?

    Our company gathers requirements, creates a testing strategy, assembles a QA team, and plans and designs tests to execute them according to the initial plan. You get regular reports along the way to stay informed about the detected issues.

Share your functional testing needs to get consulting and help

Briefly describe your project and share contact details, and we will arrange a free consulting session to discuss your needs. It's a unique opportunity to:

  • Clarify your testing requirements
  • Find out what tests would benefit your project most
  • Get a professional testing strategy
Edward Robe
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Share your functional testing needs to get consulting and help