Julian Rosen


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About

Mathematicia/data scientist. I am a staff research scientist on the machine learning team at Upstart, where I work on predictive models in the consumer lending space.

In a previous life I was an academic, doing research in pure math (which I still continue to an extent). My research is mainly in number theory and arithmetic algebraic geometry, though I also enjoy thinking about other kinds of math. I am particularly interested in motives and motivic Galois theory.


Contact information

Email:
LinkedIn: https://linkedin.com/in/julian-rosen
GitHub: https://github.com/julianrosen
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Updated 2025-08-24