Designed and executed comprehensive end-to-end automated test suites using Playwright and TypeScript for interactive web applications. Automated UI stability checks, cross-browser link handling, lazy-load image validations (using naturalWidth inspection), and complex HTML5 form validations. Developed custom assertions to verify browser validity states, emoji/unicode character edge cases, and asynchronous element rendering under various network conditions. Conducted DOM manipulation checks and verified page load responsiveness across desktop and mobile viewports.

● Built responsive user interfaces using React.js for a digital waste-sorting platform in Uzbekistan. ● Integrated front-end components with structured UI state management while setting up UI test assertions for software quality assurance.