SAP ARIBA CPI CIG API Consultant (m/f/x) - 12 mandays - 100% english speaking is fine

For a shortterm assignment of 12 Mandays, we are looking for a consultant to support in the following area:

Requirements:
Implementation of a standardized SAP Ariba interface for the transmission of purchase requisitions (PR), PR status / purchase orders (PO), PO changes, creation/cancellation of goods receipts (GR), creation of service statements (SES) to/from operational subsystems (e.