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Christina Bejjani, PhD, serves as a Senior Data Scientist at sweetgreen since August 2024, following a role as Senior Data Scientist at ChowNow from June 2022 to March 2024, where significant contributions included leading mentoring initiatives and negotiating vendor contracts that resulted in substantial cost savings. Previously, Christina held positions at Guild Education and W. W. Norton & Company, where skills in experimentation, metrics, and stakeholder management were utilized to enhance product and marketing strategies. A PhD in Cognitive Psychology from Duke University, along with extensive experience in user experience research and machine learning, underpins Christina’s commitment to data-driven decision-making and innovative problem-solving in various tech and educational contexts.