Worked on stabilizing S3 event parsing in the aws/aws-sdk-java-v2 repository, focusing on an edge-case where eventTime could be null while eventName was present. Addressed this by updating the Java-based parser to handle missing eventTime values gracefully, ensuring that the absence of eventTime no longer caused failures or incorrect parsing. Incorporated comprehensive regression tests to validate the fix and prevent future regressions, and documented the change in the project changelog. Utilized skills in AWS SDK, error handling, and unit testing to enhance the reliability of event-driven workflows for SDK consumers, reducing the risk of downstream errors in production environments.