We are seeking an experienced SAP Source-to-Pay Application Functional Lead to manage functional design, production support, and continuous improvement across SAP S/4HANA Cloud Public Edition, SAP Ariba, and SAP Fieldglass. Key Responsibilities: Lead functional design, configuration, support, and enhancements across SAP procurement and source-to-pay applications. Manage SAP S/4HANA Cloud procurement processes, including requisitions, purchase orders, goods receipts, service entries, and invoices. Support SAP Ariba Buying and Invoicing, Supplier Lifecycle and Performance, and contract compliance processes. Manage supplier onboarding, invoice processing, and SAP Fieldglass contingent workforce workflows. Troubleshoot production issues and coordinate cross-system integration with SAP Business Network, Finance, HR, and supplier systems. Lead functional testing, regression testing, release impact assessments, and production readiness. Maintain process documentation, approval workflows, master data controls, and support procedures. Collaborate with Procurement, Accounts Payable, Finance, Security, QA, and SAP implementation partners. Required Qualifications: Bachelor’s degree or equivalent experience in a relevant field. 8+ years of SAP procurement/source-to-pay implementation, support, and delivery experience. Hands-on experience with SAP S/4HANA Cloud Public Edition Procurement and SAP Ariba modules. Knowledge of SAP Ariba Buying and Invoicing, Supplier Lifecycle and Performance, contracts, and invoice management. Experience with SAP Fieldglass contingent workforce processes and cross-system integrations. Strong experience in production support, defect resolution, testing, and release management. Preferred Qualifications: Experience with SAP Integration Suite, managed gateway, and SAP Business Network. Experience in global enterprise procurement and contingent workforce environments. Relevant SAP certifications in S/4HANA Cloud, Ariba, or Fieldglass.