During May 2025, N3ca88 worked on the Netflix/mantis repository, delivering a comprehensive refactor of the Event Processing System using Java and backend development principles. The project focused on streamlining stream processing logic to enhance readability, performance, and reliability within an event-driven architecture. N3ca88 improved logging mechanisms and addressed code warnings, which increased observability and reduced technical debt. The refactor also introduced more robust subscription handling, resulting in lower latency and better throughput. These targeted changes made the system easier to maintain and scale, enabling faster troubleshooting and diagnostics while laying a stronger foundation for future backend enhancements.