During the month, contributed to the apache/spark repository by delivering a Spark Configuration Immutability Refactor focused on enhancing architectural stability and configuration safety. The work involved adopting the ReadOnlySparkConf pattern across multiple Spark components, ensuring that configuration objects remained immutable and reducing unnecessary cloning. This approach improved the predictability and reliability of configuration management within the backend, laying the foundation for future optimizations centered on immutability. The project was implemented using Scala and involved extensive code refactoring, configuration management, and disciplined code review and testing practices, with an emphasis on maintainability and robust backend development rather than bug fixing.