Helsi, a modern online medical system

Helsi is a modern online medical system.It was made for convenience of patients and doctors both in private and governmental clinics.It has over 2 000 000 users already and grows fast.UX research
The project started from two professionals - UX designer and business analyst.We settled in a headquarter of one private clinic and made deep research to figure out business and users needs.UX Design
UX designer started to develop first prototypes in high fidelity.After a while we changed this technique to low fidelity because there were a lot of changes during development.Therefore designers spent too much time to change pixel perfect mockups again and again.Prototypes were just clickable images at the beginning.They became interactive after introducing Axure and all features this software had.UX and usability tests
We had not too much time during development, therefore we frankly could not make many tests.But the most crucial parts were tested with the right amount of users.There were two different types of tests:

UI Kit and Design System
The system was quite large.UI design for different breakpoint was very time-consuming.We created UI kit first and then turned it into a design system that represents our philosophy, component-based UI and all knowledge about interface behavior.The design system allowed us to reduce time for development because programers could build the system from ready-to-use bricks (components).Also it reduced the quantity of wrong communications between designers, programmers and QA