Alexey Shtykov focused on backend error handling improvements for the Netcracker/qubership-apihub-backend repository, specifically targeting package move operations. Working in Go, Alexey enhanced the clarity of error messages by introducing a '$deletedAt' placeholder to the ToPackageExistsMsg, making it easier for developers to identify deleted packages during troubleshooting. He also simplified repository-layer error messages by removing redundant count information, which reduced confusion and streamlined debugging. Although the work addressed a single bug rather than adding new features, it demonstrated careful attention to backend development practices and contributed to more reliable system behavior and reduced support overhead for the team.