Worked on the ceph/s3-tests repository to enhance S3 versioning test coverage, focusing on concurrent multi-object deletes and validation of bucket state after deletions. Leveraged Python, AWS S3, and Boto3 to implement features that increased the number of object versions and ensured both list_objects and list_object_versions accurately reflected an empty bucket after all deletions. The approach emphasized thorough testing of concurrency and versioning edge cases, reducing the risk of regressions in production-like workflows. These improvements provided clearer CI signals when versioned deletes behaved unexpectedly and strengthened overall test reliability for S3 versioning scenarios without introducing new bugs.