During May 2025, Dio Rahman focused on backend development for the civika-app repository, prioritizing code quality and long-term maintainability. He addressed lint warnings in Blade templates by refining formatting in app.blade.php and improved a migration for the mahasiswa table by adjusting its foreign key constraint, ensuring better data integrity and smoother migration behavior. Working primarily with PHP and Blade, Dio consolidated these changes into a single commit, streamlining the review process and enhancing CI reliability. While no new features were introduced, his targeted bug fix reduced future technical debt and production risk, reflecting a thoughtful approach to backend engineering.