Over two months, contributed to the phpstan/phpstan-src repository by enhancing static analysis and security metadata for PHP codebases. Focused on refactoring SNMP-related type definitions, updating function signatures, and introducing targeted tests to improve type hinting and maintainability. Later, delivered a feature that exposed encryption details in stream metadata, adding a new crypto field to stream_get_meta_data for better security visibility in TLS, HTTPS, and FTPS streams. Maintained delta file accuracy for PHP 8.3 by removing unchanged entries, streamlining upgrade validation. Demonstrated expertise in PHP, static analysis with PHPStan, type hinting, and security-focused metadata design throughout the development process.