During May 2026, contributed to the square/okio repository by enhancing its base64 encoding functionality in Kotlin. Developed an optional padding parameter for base64 encoding functions, allowing API consumers to specify whether padding characters should be included in the output. This addition addressed interoperability needs for systems with varying padding requirements while preserving backward compatibility and API stability. The work involved careful API development and documentation updates to ensure downstream projects could easily integrate the new option. No bugs were reported during this period, and the change laid groundwork for further customization in encoding workflows using Kotlin and base64 encoding techniques.