Marcel Kocisek focused on backend development and CI/CD improvements across the MerginMaps/python-api-client and MerginMaps/qgis-plugin repositories. He addressed file storage reliability by reverting to Python’s tempfile.TemporaryDirectory for handling pull files and diffs, resolving issues caused by manual directory management. In parallel, Marcel upgraded the Python API client version in the qgis-plugin’s GitHub Actions workflow, ensuring continuous integration processes used the latest features and bug fixes. His work leveraged Python, YAML, and GitHub Actions, resulting in more stable pull workflows, reduced file access errors, and faster validation cycles. The changes demonstrated careful debugging and effective cross-repository collaboration within a short timeframe.