Emmi Rehn focused on strengthening the ingestion pipeline and API reliability for the neicnordic/sensitive-data-archive repository, addressing backend robustness through targeted error handling improvements. Working in Go, Emmi enhanced dataset parsing in both SyncAPI and Ingest by implementing detailed error logging and returning generic, client-safe messages to prevent information leakage. She corrected a typo in an error message and ensured the application flow halted appropriately after unauthorized responses, reducing the risk of cascading failures. Although the work centered on a single bug fix, it demonstrated depth in backend development and error handling, contributing to more reliable and observable data ingestion processes.