QA for POS Hardware & Mobile Banking Application

Ensuring flawless performance of both hardware and software parts of a mobile POS solution for a European fintech company.


When our client for this project, a European mobile banking service provider, was preparing to expand their business globally and venture into new markets, they approached our company with a request to test the quality of their hardware and software systems.

The main system in question was a mobile Point of Sale solution that allows businesses to perform transactions and access a range of other sales-related services with a convenient, all-in-one product. Our main task was to conduct a thorough check of the hardware terminal, as well as its connection to the mobile application and the performance of the application in different environments. The mobile POS system was intended to be used by millions of businesses across Europe, so our job was to make sure that the systems are robust and configuration reliable. Specifically, we had to check:

  • The correct operation of the hardware terminal
  • The stability of the connection between the terminal and the application
  • The performance of the whole solution under various conditions
  • The compatibility of the application with different platforms
  • The possibility and execution of the OTA firmware update


It was also necessary to ensure that every step of receiving a payment through the mobile POS system is intuitive and well-suited to the needs even of non-tech-savvy users — from connecting the hardware to confirming a transaction. This is why a great deal of UI/UX testing was also to be implemented on our side. Having delivered POS testing services to multiple clients before, we knew exactly how we needed to approach this particular POS testing project.


After a collection and thorough analysis of the client’s requirements, and taking into account the scope of the POS software testing project, it was agreed that we assign one Senior QA Engineer to the setup. As a dedicated resource, they were to be integrated into the client’s team and collaborate closely with their in-house tech specialists. Working as part of distributed teams is our forte, which is why we quickly built an efficient professional relationship with other specialists working on this POS QA project.

Responsibilities of our Senior QA Engineer included:

  • Setting up the QA process on the project from scratch
  • Selecting the candidates to strengthen the testing team
  • Performing all the necessary QA activities on a daily basis
  • Communicating with the client’s in-house team and with the project stakeholders during regular meetings
  • Providing proactive recommendations on how to improve the client’s onboarding documentation for the end users


Throughout the whole POS system testing project, we have been maintaining the documentation, starting with designing a test strategy and test plan, all the way through creating test scenarios, traceability matrices, and bug reports.

Additional POS application testing activities, aimed at checking the update and maintenance capabilities of the solution, included:

  • Testing firmware updates, firmware OTA update, firmware + SDK compatibility testing
  • Testing SDK (logs)


Types of testing we employed on this project included:


The work on this project continued for one year. In the course of our productive cooperation with the client’s in-house team, we ensured stable performance and seamless interconnection between the hardware device and the POS software app. We helped the team identify and eliminate issues that could cause unexpected behavior and hurt the experience for the end user. The client was completely satisfied with the results of our collaboration and implemented most of the improvements we suggested.

We Work With

Having one outside team deal with every aspect of quality assurance on your software project saves you time and money on creating an in-house QA department. We have dedicated testing engineers with years of experience, and here is what they can help you with.

Software is everywhere around us, and it’s essential for your testing team to be familiar with all the various types and platforms software can come with. In 21+ years, our QA team has tested every type of software there is, and here are some of their specialties.

There are dozens of different types of testing, but it takes a team of experts to know which ones are relevant to your software project and how to include them in the testing strategy the right way. These are just some of the testing types our QA engineers excel in.

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