During February 2025, Viktor Gema focused on backend reliability for the folio-org/mod-lists repository by addressing a critical issue in the ListExportController’s streaming data export. He resolved integration errors by changing the Content-Type from TEXT_CSV to APPLICATION_OCTET_STREAM, ensuring that sidecar processes could accurately interpret streamed content. Viktor updated response headers to clarify the nature of the data, which improved downstream system compatibility and reduced ambiguity in content negotiation. His work, implemented in Java using Spring Boot and API development best practices, demonstrated a deep understanding of backend protocols and contributed to more robust and predictable export workflows for consumers.