Brian Oppenheim is a Founding Engineer at Rehearsals, where he works on the machine learning and research systems behind the company’s consumer-simulation platform. Previously a Senior ML Engineer at Deepmind, Brian helped launch tool agents for Gemini and shipped improvements to Search Ads models that resulted in $100M+ in incremental annual revenue.
Brian earned a Bachelors of Science in Computer Science from Brown University before joining Google. He overhauled and taught Brown’s graduate Deep Learning course, where he created assignments on transformers and graph neural networks. At Rehearsals, Brian authored the company’s accuracy whitepaper, launched the AI interviewing platform, and has built out the core methodology of the Rehearsals engine.










