I was involved in improving my previously created WPF client for automation, as well as refactoring the existing application on ASP.NET Core, adding new functionality. A lot has been done and there is still much that can be improved in the future. The refactoring mainly focused on performance, optimizing database queries and data retrieval. I added pagination, filtering, and sorting on pages where a lot of data was displayed at once. I made the methods asynchronous on both the backend and frontend, making the interface more responsive, as there was previously a problem where visually "nothing was happening" even though a heavy query was being executed in the background, but it visually looked like everything was frozen. This is already the second project with this client, and I am satisfied with the collaboration. I hope for further work.