Worked on the uBlockOrigin/uAssets repository to deliver targeted user experience improvements in web filtering and ad blocking. Addressed unwanted ads on Trakt.tv by implementing filter list rules that block elements with specific ID patterns linking to advertising pages, using precise CSS selectors and filter list syntax. Enhanced the PlantUML editor layout by introducing custom CSS-based filters to resolve sidebar and empty section issues, improving usability. Demonstrated disciplined change management through clear commit messages and issue references, ensuring traceability. Leveraged skills in filter list management, CSS, and web filtering to reduce visual clutter and streamline user interactions across high-visibility web surfaces.