Marcin Witalis focused on improving the robustness and observability of the kyma-project/application-connector-manager by addressing a critical gap in JSON encoding error handling. He implemented explicit error detection for JSON processing within the Go backend, ensuring that any encoding failures are now logged with detailed context about the affected payload. This approach not only enhances error visibility but also streamlines debugging by surfacing issues that previously could have failed silently. Marcin’s work leveraged his skills in backend development and error handling, resulting in a targeted fix that reduces the risk of undetected data issues along the application connector’s data path.