J.M. Andrade contributed to the formatjs/formatjs repository by enhancing the formatDateTimeRange API to accept string inputs for date ranges, aligning its behavior with related helpers and improving integration consistency. Using TypeScript, Andrade addressed a misleading type signature, reducing the risk of incorrect usage and supporting safer downstream adoption. In the RevealBi/Documentation repository, Andrade improved cross-platform documentation reliability by normalizing image filename casing and updating Markdown references, preventing broken links on case-sensitive systems. The work demonstrated attention to detail in file management and documentation practices, with a focus on practical, targeted improvements rather than broad architectural changes during the engagement period.