During December 2024, Xli focused on backend reliability within the confluentinc/schema-registry repository, addressing a critical shutdown sequence issue. By analyzing the system design, Xli identified a race condition risk when shutting down the Leader Elector after kafkaStore and metadataEncoder. To resolve this, Xli refactored the shutdown logic in Java, ensuring the Leader Elector now terminates first, which reduces restart-related risks and supports smoother production deployments. This targeted bug fix, tracked through a single, well-documented commit, improved maintainability and reviewability. Xli’s work demonstrated depth in backend development and system design, prioritizing operational stability over feature delivery during this period.