Worked on reliability improvements for the google/orbax repository, focusing on optimizing checkpoint restoration in distributed systems. Addressed a bug where restoring the same checkpoint twice in single-process deployments led to failures due to redundant synchronization. Implemented a targeted update in Python to the checkpointing workflow, allowing the system to skip unnecessary cross-process synchronization when only one process is active. This change reduced contention and improved both performance and robustness of the restoration path in single-process environments. The work demonstrated a strong understanding of distributed systems concepts and contributed to more efficient checkpoint management without introducing new features during the period.