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Guilherme Chrisostomo is a Senior Data Engineer at BTG Pactual since May 2022, focusing on data engineering and the implementation of ETLs while ensuring data quality and optimization. Prior experience includes roles at AB InBev, where Guilherme developed ETL jobs using Spark Scala and Azure Databricks, and at Bari, where ETLs were created on AWS EKS with Pyspark. As a Big Data Engineer at Bradesco Cartões, responsibilities included modeling and supporting ETL code for Data Lakes and Data Warehouses. Earlier experience as a Management Information Analyst at Bradesco involved engagement with stakeholders to address credit recovery processes and promote a data-driven culture. Guilherme holds a Bachelor of Science in Information Systems from Universidade Positivo and a High School Diploma in Computer Programming from SPEI.