• Define system architecture design, collaborate with stakeholders across Business Domains on integration testing across multiple systems (internal and external) on worldwide level, project cutover, go-live support, and project closure/handover to the SAP production team on SAP Commerce and SAP S/4HANA.• Focus on end-to-end customer experience.• Review of business requirements and perform functional gap analysis to clearly define project scope, deliverables, resources, timeline, dependencies and risk mitigation plan.• Implementing, deploying, and managing SAP BTP applications and integrations between different systems.• Collaborate in the technical design and implementation of integrations between Apple and its extensive external partner network (including acquirers, banking/financial partners, government compliance agencies, regulatory agencies, etc.) utilising multiple frameworks, platforms and protocols such as SAP BTP, EDI, XML, API, Portals, and WebMethods.• Ability to navigate ambiguity to define a workable model and design that meets both system and business requirements while drive scalable designs and enforce strict adherence to global design principals, security, encryption and compliance standards, as well as documentation standards.• Present the solution for design reviews and business playbacks.• Write technical specifications, work with DevSecOps on the development and execute functional acceptance testing.• Ensure adequate testing in all test cycles including Unit Test, Integration Test across multiple systems (internal and external), User Acceptance Test, Performance Test and Regression Test for smooth production go-live.• Status reporting within the team and upwards to business and technical leadership.