The Senior SAP Ariba Application Engineer is responsible for the day-to-day support, configuration, enhancement, and optimization of SAP Ariba applications across the Source-to-Pay lifecycle. Working closely with Procurement, Finance, AP, and business stakeholders, the role provides hands-on functional support for Ariba upstream and downstream modules, drives continuous improvement initiatives, supports testing and releases, and helps deliver efficient, compliant, and user-friendly procurement processes globally.