During December 2024, M. Paolone focused on enhancing concurrency safety and runtime efficiency in the JeffersonLab/coatjava repository. He refactored core data-processing components in Java, localizing internal state within the ModeAHDC extract method to eliminate shared mutable state and reduce race conditions. Additionally, he optimized the PreClusterFinder by simplifying hit list population and removing redundant loops, which improved throughput and stability under load. These targeted code refactoring and performance optimization efforts delivered measurable gains with minimal changes to the codebase, reducing the risk of regressions while addressing a critical bug and strengthening the reliability of the system’s event processing pipeline.