Drive property adoption, PO compliance and continuous process improvement, partnering with Shared Services, who own the platform, its configuration and change control; Lead supplier enablement within Coupa — supplier onboarding (SIM), catalog/Punch Out setup, and cXML invoicing conversion for high‑volume suppliers — to increase electronic PO usage and improve PO before invoice performance across the hotels; Manage the review, approval, or rejection of all new supplier submissions from the field, and partner with Accounting/Finance, Accounts Payable, and Risk Management to integrate Certificate of Insurance (COI) collection and approval into the onboarding workflow. Strategic Sourcing & GPO (Avendra) Management Serve as the enterprise relationship owner and administrator for Avendra, Atrium’s Group Purchasing Organization (GPO) to monitor program compliance, evaluate and add new category suppliers, conduct annual property‑level business reviews, resolve partner and property issues, and maximize the rebate/allowance return to Atrium; Lead the vendor management process, including developing and maintaining current and potential vendor lists, negotiating goods and services, and developing enterprise‑wide strategies for pricing and credit terms.