Logan Horowitz
AI Product Manager · New York · zev1085@gmail.com · loganzev.com · github.com/logan1085
AI product manager with experience in consumer products, payments, identity, growth, and platform work. Now focused on AI evaluation, rubric design, and products that make model behavior easier to inspect.
Experience
Eval generation and rubric design: producing the cases that test a model and writing the rules that decide what counts as a good answer.
Summer internship on the advisory side.
Product work on an early-stage team.
Payments, identity, growth, and platform. Past a million users; monthly actives from 195K to 800K. Led a 50-person engineering team after the acquisition.
Pricing, marketplace design, and the launch of the first regulated sports stock market. Helped raise a $75M Series A.
Diligence on investments over $100M. Supported a €2.25B exit.
Built the models behind purchase-intent prediction.
Selected building
A work-sample assessment for how people judge, verify, and direct AI.
Self-directed study with a transformer implementation and an interactive policy iteration sandbox. The remaining curriculum is planned work.
Education
Information Science, focused on machine learning and data science. TA’d Machine Learning with Python. Led Cornell AppDev.
Writing
Middle Layer, a newsletter since March 2025 on compute, distribution, and the boundary between AI platforms and products. middlelayer.substack.com.
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