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Eryk Kostrzeński is a seasoned professional with extensive experience in quality assurance and project coordination within the financial sector. Currently serving as a Senior Quality Assurance Analyst at Mastercard Processing S.A. since January 2022, Eryk previously worked at Onwelo as a Test Analyst and Project Assistant, managing implementations and coordinating testing activities. Additional roles include experience in sales and marketing for various companies, where Eryk demonstrated expertise in client relations, equipment sales, and technical support. Eryk holds degrees from Warsaw University of Technology and Bialystok University of Technology.