Worked on the gravity-ui/table repository to enhance both usability and testability of table components. Focused on front end development using React, JavaScript, and TypeScript, the work introduced a new 'qa' property to the BaseTable component, aligning it with existing patterns from the ukikit library and enabling more robust automated testing. Additionally, refined the bulk selection logic by ensuring non-selectable rows are excluded and addressed issues with the header checkbox state to prevent indeterminate glitches. These changes improved the reliability of bulk actions and accelerated QA cycles, demonstrating attention to detail in UI design and comprehensive testing practices.