You can automate using the API of Qlik Catalog. I've created a program using the call "/entity/v1/loadDataForEntities". It is possible create a script using bash (.sh) and schedule to execute on linux. This way I managed to automate this load process.
It grabs files from a directory you specify and also based on the filename. So lets say you put files there to process with a specific name format, jitterbit picks it up, processes it and can edit the file name (like add 'processed [date]' at the end of the file and save the processed file in a different location.