Sarah Pfeffer is a Senior Research Engineer at United States Steel Corporation, with over a decade of experience in the steel industry since joining the company in February 2012. Pfeffer has developed a steel solidification prediction model and user interface using machine learning tools, supports various steel production processes, and conducts detailed analyses to improve product quality. Previous roles at United States Steel Corporation include Quality Engineer, where Pfeffer focused on maintaining cleanliness standards and reducing defects, and Management Associate in Quality Assurance, where Pfeffer contributed to enhanced quality systems and process monitoring. Before joining United States Steel Corporation, Pfeffer completed internships at Cummins Inc. in metallurgical engineering, where analysis of failures in fuel systems and engine parts was conducted. Academic credentials include a Master of Science and a Bachelor of Science in Materials Science and Engineering from Carnegie Mellon University, as well as certifications in software development and full stack web development.