During May 2025, Jeremy Dufraisse focused on backend development and SEO optimization for the YesWiki/yeswiki repository. He addressed a specific SEO issue by implementing a targeted bug fix that applied a 'noindex, nofollow' meta robots tag to not-found and non-show pages, preventing search engines from indexing invalid or irrelevant content. Jeremy refactored the MetarobotsAction service retrieval to use a class constant, improving code consistency and maintainability. Working primarily with PHP, he enhanced search engine crawl efficiency and reduced the risk of improper indexing. The work demonstrated a methodical approach to code quality and SEO best practices within the project.