During May 2026, this developer enhanced tax regime classification in the Unimake/DFe repository by adding an 'Outros' option to the RegEspTrib enumeration, broadening the system’s ability to categorize tax regimes. The work focused on backend development using C#, with careful attention to traceability through well-documented commits. This targeted feature improved data consistency and supported more accurate downstream analytics and reporting, aligning the platform with evolving regulatory requirements. No major bugs were reported or addressed during this period, reflecting a focused delivery on new functionality. The contribution demonstrates depth in backend systems and a methodical approach to business-driven enhancements.