Tsahi Tsabari developed scalable UI primitives and enhanced rendering consistency for the wix-incubator/headless-components and kitchensink repositories, focusing on React and TypeScript. He delivered new category and product components, unified rendering logic with a shared AsChildSlot utility, and standardized naming conventions to improve API clarity. By refactoring CategoryPicker and introducing ProductPrimitive, Tsahi aligned legacy components with a headless architecture, enabling richer product displays and customizable views. His work emphasized code standardization, component management, and dependency maintenance, resulting in improved data presentation and faster feature delivery. The depth of these changes reduced downstream churn and strengthened the overall frontend architecture.