• SolutionsManual QA
  • Technologies

    Postman, Chrome Dev Tools
  • Country EU-based

About client

Our QA team recently completed a project for a long-term client, focusing on their Marketplace API.

Their environment involved a set of software interfaces designed to optimize the work of customers in specific niches. Clients use a flexible and customized system of interfaces to collect data on their site which includes meta information and open data like, for example, the availability of transport tickets. This data can be automated through the right set of APIs, allowing real-time updates on the client side.

Previously, we tested individual elements of the client’s solutions. Now, it was time to ensure the entire API system worked seamlessly. 

Project Duration

1 year

Team Composition

Team Lead — 1

Manual QA — 4


  • Complex API structure. The API system was extensive, with numerous endpoints and dynamic data, requiring comprehensive understanding and efficient testing within a tight timeframe.
  • Real-time data updates. Ensuring that real-time data updates were accurately reflected on the client side was a significant challenge.
  • Billing and user flow. Verifying the functionality of billing plans, including activation, special conditions, payments, deactivation, and overdue payments, added another layer of complexity.
  • New features to test. Just before the release, the client was finalizing new features and pop-ups for premium accounts, necessitating thorough UX/UI testing.


We assembled a dedicated team for the job: 5 professionals, including 4 manual QA and a part-time Team Lead, all with a deep understanding of API testing and dynamic data environments.

Our collaboration with the development team was crucial. More than just running tests, we actively reviewed requirements, scrutinized test cases, and identified defects.

Our comprehensive testing strategy included:

  • Functional testing. We verified that all data was displayed correctly across the client’s sites. We manipulated the database to simulate dynamic data changes and checked real-time updates.
  • API testing. We conducted specific API testing, checking the availability and functionality of each endpoint.
  • Billing and user flow testing. We tested billing plans and various user scenarios using test accounts.
  • UI/UX testing. We focused on the new features and pop-ups for premium accounts, ensuring a smooth and user-friendly experience.

With a solid team and a clear strategy, we managed to cover over 500 test cases. We used tools like Postman for API testing, which helped us identify several serious bugs.


Engagement Model:

Dedicated team


Ensuring Quality and Reliability for Marketplace API
Ensuring Quality and Reliability for Marketplace API
Ensuring Quality and Reliability for Marketplace API

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The final stretch of software releases is often the most critical. Our role as a final check — a form of acceptance testing — added an extra layer of assurance before the premium product features went live.

Our high-impact, outcome-focused testing cycles resulted in:

  • Validated functionality of all API endpoints and dynamic data updates.
  • Verified the correct operation of billing plans and user scenarios.
  • Tested and ensured the smooth functioning of new features and premium account pop-ups.

Over 500 test cases processes, identifying and reporting critical bugs.


Satisfaction rate


Conversion of mobile app


Bounce rate decrease

We Help With

Your tech partner needs to be well versed in all kinds of software-related services. As the software development process involves different stages and cycles, the most natural solution is to have them all performed by the same team of experts. That’s exactly what our diverse range of services is for.

The choice of technology for your software project is one of the defining factors of its success. Here at QArea, we have hands-on experience with dozens of popular front-end, back-end, and mobile technologies for creating robust software solutions.

In-depth familiarity and practical experience with key technologies are one of the cornerstones of successful software development and QA. But it also takes specific knowledge of the industry to develop a solution that meets the expectations of the stakeholders and propels its owner to success.

Web App Development

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Give your buyers what they want — a seamless shopping experience.

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