Shahriar Morabi developed a configurable aggregate message acknowledgment mode for the justtrackio/gosoline repository, enabling support for both atMostOnce and atLeastOnce delivery semantics. He updated the consumer logic to conditionally acknowledge messages after processing, based on the selected configuration, which improved reliability and reduced duplicate message delivery for downstream systems. This work demonstrated his expertise in backend development, configuration management, and message queue systems, using Go as the primary language. By introducing a config-driven approach to message acknowledgment, Shahriar enhanced the flexibility of delivery guarantees, addressing the needs of streaming architectures and strengthening the robustness of the overall system.