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Siavash Tabrizian is a Senior Quantitative Developer at Fisher Investments since November 2023, specializing in portfolio optimization and trading technology. Previously, Tabrizian served as an Associate - Quantitative Strategist at Goldman Sachs, where the development of a firmwide climate transition risk factor model for equities and risk monitoring applications took place. Prior experience also includes a role as Data Scientist II at Variant, focusing on machine learning and optimization projects, and as a Graduate Teaching and Research Assistant at Southern Methodist University, where teaching and summer research in stochastic programming occurred. Tabrizian has held internship positions including a Research Intern at Axioma Inc., concentrating on financial portfolio construction, and has fulfilled teaching assistant roles at Sharif University of Technology. Academic credentials include a Ph.D. in Operations Research from Southern Methodist University, a Master's in Industrial Engineering from Sharif University of Technology, and a Bachelor's in Civil Engineering from Iran University of Science and Technology.