Worked on the pulibrary/bibdata repository to deliver a focused refactor of Solr format handling, migrating from string-based representations to a strongly-typed enum. This change enhanced type safety and reduced unnecessary cloning within the Solr indexing path, improving maintainability and clarifying code intent. The approach involved careful refactoring using Rust, leveraging enum patterns and serialization techniques to ensure robust deserialization and integration with Solr. No major bugs were reported during this period, reflecting disciplined engineering practices. The work demonstrated proficiency in Rust, type safety, and refactoring, laying a foundation for safer future enhancements to the Solr integration pipeline.