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Stephen J. Barr has a diverse work experience spanning various roles and industries. Stephen J. currently holds the position of Principal Architect & Technical Evangelist at CloudFix since January 2023. Previously, they worked as the Chief Technical Evangelist at DevGraph starting from February 2022. Prior to that, they served as the Managing Director at Vertex Development from February 2020. Stephen has also worked as a Senior Software Developer at CancerAid from November 2021 to January 2022. Before transitioning to technical roles, Stephen held the position of Senior Analytics Consultant at MIP from March 2018 to July 2020, where they focused on utilizing machine learning and AI for data analysis and reporting. Stephen J. also served as the Lead Clinical Data Scientist at Seattle Cancer Care Alliance from April 2016 to January 2018, where they played a crucial role in designing software tools and business processes related to clinical pathways. Stephen's academic background includes being a full-time PhD student in Operations Management at the University of Washington from August 2012 to July 2015, where they were also a teaching assistant for Technology Management MBA students. Stephen J. completed an MBA/PhD program in Finance and Applied Statistics at the University of Rochester from June 2009 to May 2012. Stephen earned undergraduate degrees in Applied and Computational Mathematical Sciences from the University of Washington and received the "Graduating Senior of the Year" award. Stephen J. started their career as a Software Test Engineer at Microsoft from 2003 to 2004.

Stephen J. Barr began their education in 2003 at Bellevue College, where they obtained an Associate of Science degree in Computer Science in 2004. Stephen J. then continued their studies at the University of Washington from 2007 to 2009, earning a Bachelor of Science degree in Applied and Computational Mathematical Sciences and Economics. From 2009 to 2012, Barr attended the University of Rochester and completed a Master of Business Administration (MBA) with a focus on Finance and Business Management, Applied Statistics. Stephen J. later enrolled at the University of Washington's Michael G. Foster School of Business in 2012, pursuing a Doctor of Philosophy (PhD) in Business Administration, Management, and Operations. However, their PhD remains incomplete as of 2018.

In addition to their formal education, Barr obtained several certifications from Coursera. These include "Improving Deep Neural Networks: Hyperparameter tuning, Regularization, and Optimization" and "Structuring Machine Learning Projects," both obtained in July 2018. Stephen J. also completed "Neural Networks and Deep Learning" in June 2018. It is noted that Barr has a certification in "Machine Learning," but specific details regarding the institution and completion date are not available.