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John Kamffer is a Senior Analytics Engineer at Yoco, specializing in standardizing data transformation and consumption in business intelligence platforms. Previously, John held multiple roles at Klarna, including Senior Analyst & Competence Lead for External Data Services, where performance monitoring and API integrations were prioritized. Earlier experience includes positions as Senior Consultant at Deloitte South Africa, focusing on customer value management, and Actuarial Analyst at Platinum Life, where SQL performance was optimized. Additional experience as a Data Analyst involved consulting on value-added tax recovery, and academic credentials include a Bachelor's Degree in Actuarial Science from Northwest University Potchefstroom.