During January 2026, Mathieu Cecchinato focused on enhancing financial calculation accuracy across the Hyperion and Titan repositories. He migrated monetary representations from floating-point to integer-based cents, addressing precision issues and reducing rounding errors in backend calculations. This approach ensured that all monetary data models and calculations used integer values, while the user interface continued to display amounts in euros for clarity. Mathieu utilized Dart and Python, applying his expertise in API integration, backend development, and database management to align data handling and presentation logic. The work demonstrated careful attention to auditability and consistency in financial reporting across both projects.