During a two-month period, Maci enhanced enum handling and type safety across the facebook/fbthrift and facebook/sapling repositories. They introduced memory-optimized Rust enum annotations and streamlined adapter patterns, reducing boilerplate and aligning Rust code generation with C++ semantics. By implementing validated conversion paths and improving error handling, Maci strengthened cross-language data interchange between Rust and Python, mitigating risks from brittle integer representations. Their work included expanding test coverage, updating code generation templates, and consolidating trait implementations. Using C++, Rust, and Thrift, Maci delivered robust, maintainable backend features that improved reliability, memory efficiency, and long-term maintainability for Thrift-generated types.