Worked on the facebook/fbthrift repository to deliver a targeted code quality improvement by refactoring ThriftStructTypes.php. Focused on simplifying Thrift Struct Type Aliases, the work removed redundant type constraints to enhance code clarity and maintainability. This change improved the readability of type handling and reduced the risk of misused constraints, laying a foundation for safer future enhancements. The approach emphasized disciplined Git-based collaboration and readiness for static analysis. Demonstrated expertise in Hack programming, code refactoring, and type system design, with the update lowering future maintenance costs and supporting faster onboarding for new contributors. No major bugs were addressed during this period.