Working with Filesystem and decision

We are trying to configure a solution that runs a job that will select files that have been downloaded using our FTP server. I currently need help adding in a scheduled job and deleting files after they have been run through a dataflow.

For deleting the file after the run, you can use File System Action in a workflow and run the relevant Dataflow in that workflow. Also you would have to Parameterize the Source Path in the File System Action. Then use all these flows in a Scheduled job.