Mehnaz refactored the TCP worker state polling logic in the aws/s2n-quic repository by introducing a trait-based approach, specifically implementing the PollBehavior trait and a DefaultBehavior. This work decoupled the polling mechanism from the worker lifecycle, enhancing both modularity and testability of the system. Using Rust and leveraging skills in concurrency and networking, Mehnaz’s changes allow for safer experimentation and lay the groundwork for future performance improvements in TCP polling. The refactor addressed maintainability concerns in system programming contexts, enabling more flexible feature development and easier testing without introducing new bugs or altering existing functionality.