Worked on the pola-rs/pyo3 repository, delivering a refactor of the SelfReplacementVisitor to leverage Rust’s lifetime elision, which streamlined the VisitMut implementation. This change reduced boilerplate and improved code readability, making the transformation pipeline easier to maintain and onboard new contributors. The approach focused on advanced Rust features, particularly lifetime management and the visitor pattern, to simplify complex code paths. No major bugs were addressed during this period, with efforts concentrated on enhancing maintainability and code quality. Demonstrated proficiency in Rust, code refactoring, and macros, contributing a targeted feature that improved the project’s internal architecture and developer experience.