Create and maintain PO Estimator (POE) calculation. ● Manage PO creation, maintenance and closure. ● Create, maintain, and close-out site-specific purchase requisitions in the local systems, utilizing the study-specific PO calculator, CTAs and CTMS for applicable countries. ● Run timely subject visit completion reports and enter data into CTMS. ● Generate payments through CTMS, where applicable, and enter invoices into CTMS upon receipt to process ad-hoc payments. ● Create and send payment notifications and/or reminders to sites and study teams to ensure timely payment. ● Complete any RFI (request for invoice) and mismatches in a timely manner to avoid any business disruption. ● Answer queries, questions and issue resolution with sites and study teams in a timely manner. ● Rectify failed payments, as appropriate, for purchase requisitions