This is to certify that Mayeryn has performed the project of webservice karmydedykowane.pl for my company. The whole development process went smoothly and according to my requirements. All throughout our cooperation I was kept informed and no communication-related problems were encountered. Any technical problems reported by me were instantly fixed and dealt with by the company’s employees. Due to their expertise and high performance the project met the deadline. My cooperation with Mayeryn was not only fruitful but also satisfactory. I would highly recommend them for any IT-related projects.