Sergey Z.

There are not enough words to describe such a perfect collaboration. This worker had a lot of patience and always took the time to carefully respond to all questions I have, and also wrote a lot of supplementary code to demonstrate that each and single feature works without leaks, and is reliable, stable and without bugs. He even made another application to demonstrate that all is absolutely stable and 100% perfect. The code is clean, elegant and 100% up to my expectation. I would highly recommend this worker to every employer out there.