Viktor Piven

Excellent work done, everything is fast and of high quality. I recommend the specialist.

Beautifully and professionally done work. I am satisfied with the specialist. This is not the first project I have ordered from him.

A professional and expert in their field, attentive to the client, keeps their word.

Very good developer, everything is clear, quality, and on time. I recommend for work and hope for further cooperation.

The project was completed clearly, even with improvements. I am satisfied with the result and hope for further cooperation.))

Everything is great, we recommend for work quickly and efficiently.

Viktor performed the testing and retesting of the project with high quality. The check was conducted carefully and thoughtfully: scenarios were reproduced sequentially, edge cases were recorded correctly, and reports were structured and accompanied by videos and screenshots.

I would like to note the professional approach — Viktor asked clarifying questions on controversial points and focused on the actual behavior of the product, rather than on a formal search for bugs. As a result of the work, no critical regressions were identified.

I can recommend Viktor as a responsible and attentive QA specialist.

An amazing performer, very clear and structured in their work. Knows their business well, very pleasant to communicate with. I recommend wholeheartedly!

I recommend for collaboration! Very communicative performer with a professional approach who will recommend and help with advice and works very quickly!!! Top in their field!

Viktor completed a full cycle of functional and negative testing for my Telegram bot.

I was more than satisfied with the work.

Viktor approached the task in a highly professional manner:
- he carefully studied the technical specifications, clarified important points, and offered valuable suggestions;
- he built a clear structure of test cases and fully covered all scenarios, including complex FSM branches;
- he checked positive, negative, contextual, and non-standard scenarios, as well as all types of inputs and edge cases;
- he prepared a very detailed and neat report with descriptions of steps, expected/actual results, screenshots, and a clear classification of found bugs.

As a result, I received a truly professional test report at the Senior QA level, which became a solid foundation for further product development. It is clear that this person has a deep understanding of both testing and the logic of how Telegram bots work.

I would like to specifically highlight his accuracy, speed, transparency in communication, and respectful attitude towards the task.

I recommend Viktor to anyone in need of a quality, attentive, and technically proficient QA specialist. I will definitely reach out again.

Excellent work done on the existing project by the same specialists for integration with artificial intelligence. Everything was completed quickly and professionally. The code is well-written and includes comments on important parts. Communication was active, and all necessary adjustments were agreed upon and made. I recommend the specialist!

Detailed and expanded technical specification for the upgrade of the previous project from the same contractor. Satisfied with the work.

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Everything is excellent and done according to the specifications. I recommend!

Quick and high-quality work done. The specialist maintains communication and makes all necessary adjustments if needed. The work is accompanied by all explanations and instructions.

The work was completed in full, excellent communication with Viktor, and high-quality execution.

Everything went well and quickly.