Worked on the OSGP/open-smart-grid-platform repository to deliver serialization contract testing aimed at validating cross-project compatibility for request and response objects. Focused on reinforcing integration reliability, the approach involved implementing comprehensive unit tests using Java and JUnit to ensure consistent serialization behavior across different components. Additionally, improved the clarity and maintainability of the test suite by renaming a test method, making future updates more straightforward. No production defects were addressed during this period, as the primary emphasis was on enhancing test quality and maintainability. This work contributed to reducing integration risk and strengthening overall release readiness for the platform.