Worked on enhancing data integrity and frontend stability for DSpace repositories, focusing on PubMed import workflows and Angular build processes. Delivered DOI metadata mapping validation in DSpace/DSpace, ensuring that DOI identifiers from PubMed imports are accurately parsed and linked to imported records, with integration tests updated to verify this behavior. In DSpace/dspace-angular, addressed build warnings by removing unused standalone component imports and refining dependency declarations, resulting in a cleaner build process without user-facing changes. Utilized Angular, TypeScript, and Java to improve CI reliability and developer productivity, reducing risks related to metadata quality and streamlining the development workflow.