Sparsh Sah

Sparsh Sah is a Senior Machine Learning Engineer at Affirm since May 2025, focusing on portfolio data, modeling, and optimization. As Co-Founder of ThirdBear, a media and entertainment studio since January 2018, and Founder of foggyBASIS, a family office, Sah demonstrates entrepreneurial leadership. Previously, as a Member of Technical Staff at Theorem, contributions included ML-driven credit risk modeling backed by Y Combinator and Two Sigma Ventures. Prior experience at AQR Capital Management involved roles as Quantitative PM Associate and Quantitative Research Analyst, performing systems engineering, risk management, and model optimization for a $65 billion fund. Sah served as a Teaching Fellow at Harvard's Computer Science and Economics departments and gained experience as a Research Assistant and intern in various capacities, developing fiscal models and analytical tools. Sah holds a B.A. with Honors in Applied Math/Computer Science and Economics from Harvard University.