Worked on enhancing observability for critical business operations within the powsybl-entsoe repository by developing and integrating a Timed LogUtils utility. This utility standardized and timed logging across essential calculation paths in the flow decomposition process, addressing the need for improved troubleshooting and reliability of core calculations. The implementation leveraged Java and SLF4J for robust backend development, while Logback was used to manage log output. Comprehensive unit tests were written using JUnit 5 to ensure logging behavior remained consistent under various scenarios, supporting ongoing code evolution. The work focused on maintainability and operational transparency rather than addressing bug fixes during this period.