Rostislav Kovalchuk

The task was done quickly.

He saved a student's life, write telegram bots, the work was done quality and very quickly. Thank you !

Rostislav delivered when urgently needed was the Telegram Bot. Everything was done in 2 hours, all requests were taken into account. thank you.

Speed and quality at height.

Very quickly and well, pleasantly cooperate

The project was completed in the agreed deadlines with the necessary explanations, Rostislav was very easy to communicate, quickly answered all questions. I gave the necessary instruments to the project. I strongly recommend cooperation.

Thank you to Rostislav for the quality done work, support throughout the implementation and initiatives shown. I recommend !

A very relaxing person. I recommend it. quickly and efficiently.

The work is done at 10 out of 10, all very fast and all the nuances are completed. I advise!

Everything is perfectly done, finalized the idea by 100%

The project was performed very high quality, with a lot of small improvements, rectangles and subtles. Rostislav - Prof, thank you for your patience)
The execution deadlines actually increased due to our fault, as designers delayed their work for a long time.
His own part of the development work and the main functions Rostislav performed in time!

Correct attitude, attentive to the details, punctual in execution.

Совместно реализуем второй проект. Спасибо за работу. Рекомендую!!

It was done quickly and exactly what was desired.

Quick, clean, miminalist and efficient

Thank you for work! I recommend the freelancer. The responsible man, said, did, always in contact!

Good luck, thank you for work!

All great, great artist, I recommend it!

I am very grateful for the efficient and efficient work. The execution took into account all of my wishes, also offered a few of his directions. The creation is creative. I recommend to everyone!

All top, made even better than I wanted,
When I wrote TZ I understood about what I needed but even the idea of the design and mechanics I didn't have, Rostislav did everything right, thank you for work, soon I'll go again

A very good guy, responsible and communicative. From here I really advise to collaborate because I had experience working with different developers, but this really didn’t help me and help me.

The task is performed quickly and efficiently. I recommend cooperation.

He quickly and well managed the task.

The project was done quickly and well, thanks to the implementer.