Worked on backend development for the open-zaak/open-zaak repository, focusing on resolving a critical issue with notification payload serialization. Addressed a bug where notification data was not properly formatted as JSON, implementing a fix that ensures all payloads are sent using the json parameter in nrc_client.request. This approach improved the reliability and interoperability of notifications with downstream services, reducing failures and enhancing production stability. Utilized Python for API integration and backend logic, emphasizing clear commit history for traceability and maintainability. The work strengthened the robustness of notification handling and contributed to more effective debugging and API client usage within the project.