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Liwia Lis-Stefan is a Senior data analyst with experience in diagnosing fraud utilizing electronic services and ATMs, as well as developing multidimensional analyses using Big Data tools and data warehouses. With a background in supporting sales and managing databases, Liwia has also worked as a support specialist and a teacher, preparing individual teaching paths for students at different levels of advancement in mathematics. Graduating with a Master's degree in Mathematics with a specialization in Applied Mathematics, Liwia has a strong academic background to support their professional experience.