Currently, the DataDownload, DataStreaming & DataUpload services have their own API:
The JobSubmitter service is already supported via the FME Server REST API and can be invoked with a set of REST Calls:
https://docs.safe.com/fme/html/FME_REST/apidoc/v3/#!/transformations
I would be nice if all 3 services (DataDownload, DataStreaming, DataUpload & JobSubmitter) could be invoked via the FME Server REST API to make it easier for developers to leverage the power of FME Server. This would allow for more consistent application development without worrying about different APIs for one product.