Worked on enhancing developer documentation and user experience in the php/doc-en and symfony/symfony repositories, focusing on PHP and Symfony back end development. Improved the PHP Session Garbage Collection documentation by clarifying usage, limitations, and required permissions, which streamlined onboarding and reduced support needs. In Symfony, clarified Dependency Injection documentation for the #[Target] attribute by adding explicit FQCN use statements and refining grammar, while also improving deprecation warnings for TaggedIteratorArgument to include tag names for better traceability. Emphasized technical writing and documentation skills, using PHP, Markdown, and XML to deliver precise, targeted updates that support maintainability and developer efficiency.