Worked on the Netflix/mantis repository to deliver a comprehensive refactor of the Event Processing System, focusing on improving readability, performance, and reliability. The approach involved restructuring stream processing logic, enhancing logging for better observability, and ensuring robust subscription handling to support future scalability. Targeted code cleanups addressed technical debt and improved maintainability, while warnings fixes contributed to a more stable codebase. By leveraging backend development skills and expertise in event-driven architecture with Java, the work resulted in lower system latency, increased throughput, and easier troubleshooting, laying a stronger foundation for ongoing development and operational efficiency within the project.