Worked on the pinterest/ray repository to deliver an architectural refactor focused on modularizing the raylet code path. Extracted the ObjectRefGenerator into a standalone module, reducing coupling with _raylet.pyx and enabling more targeted testing and future enhancements. This change improved code organization and maintainability, aligning with ongoing efforts to simplify the codebase and support long-term development velocity. The work demonstrated collaborative engineering in a multi-author environment and addressed specific upstream discussions. Utilized Python, Cython, and asynchronous programming techniques to achieve a cleaner separation of concerns, ultimately making the codebase easier to test, maintain, and extend over time.