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Mario J. Callejas Cabarcas is an experienced data professional currently serving as an Associate Data Manager and Senior Data Engineer at Treinta since January 2022. Prior to this role, Mario held the position of Líder técnico at nuvu, where responsibilities included leading a team and supporting the design and implementation of Cloud architectures in AWS for Machine Learning. Mario also worked as a Data Analyst at LegalMetrica, focusing on the development of Natural Language Processing models for image classification in PDF documents. Mario holds a degree in Electronic Engineering from Universidad del Magdalena and has additional training in circuit design from Servicio Nacional de Aprendizaje (SENA) and web development through a Udemy course in Django.