Kai Westerholz is a senior developer working in the SAP S/4HANA quote-to-cash area. In this role, he focuses on creating APIs like the Sales Order Simulation API or the Sales Order Bulk Processing API. Another topic of focus is the enablement of the sales order for machine learning capabilities. In parallel, he establishes clean code and test-driven development in his team. Previously, he worked as a consultant for SAP Cloud for Customer, specializing in integration with both SAP and non-SAP systems using different technology stacks.