Corentin Simon focused on code quality improvements for the govpf/openfisca-pf repository, delivering a leaner and more maintainable backend codebase. He used Python and data modeling skills to remove dead code, specifically eliminating an unused variable and its related tests, which reduced technical debt and potential runtime errors. Corentin refactored import statements to enhance readability and consistency across the module, supporting future development and easing code reviews. His work emphasized maintainability and test reliability, ensuring the codebase was better structured for ongoing contributions. Throughout the month, he demonstrated a methodical approach to backend development and codebase hygiene.