Mitchell Castetter is an American entrepreneur and the founder and CEO of BioReact, a software platform focused on data harmonization, analytics, and AI-driven optimization for bioprocess development. He started BioReact to address a persistent gap in the life sciences: scientists relying on fragmented tools like spreadsheets and legacy statistical software to analyze complex experimental data. Prior to founding BioReact, Mitchell built his career in life sciences at Beckman Coulter Life Sciences, where he worked with organizations ranging from early-stage startups to large pharmaceutical companies, including groups involved in vaccine development and synthetic biology.