Worked on improving test stability and resource management in the wazuh/wazuh-indexer repository, focusing on S3 client integration using Java and the AWS SDK. Addressed thread leaks in S3BlobContainerRetriesTests by implementing a dedicated ScheduledExecutorService for the S3 client during tests, which isolated scheduling and prevented resource leaks. Updated the constructors and configuration methods of S3AsyncService and S3Service to accept external ScheduledExecutorService instances, enabling more controlled and reliable test execution. This approach enhanced concurrency management and reduced test flakiness, leading to more stable CI runs and minimizing the risk of S3-related instability in production environments.