Jeffrey Xie

Hi

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About

I'm a Math/CS student at Dartmouth College and part-time researcher at Adaptional (YC S25). My work spans persona vectors and modeling world systems.

My goal is to find a “prime composition” of basis vectors that compose personality. I'm also working on embedding a world model into Kalshi with my dear friends Praneel Patel and Randy Lim.

I enjoy gardening(particularly weeding), lifting, distance-running(17:29 5k), minimalistic photography and chamber music(violinist).

I live to increase the variance of my life. Be like the penguin.

Education

Dartmouth College

Bachelor of Arts in Math / CS

Co-Founder of Dartmouth AI/ML Club | HackDartmouth Fundraising

Relevant Coursework: OOP, Linear Algebra, Linear Modeling, Graph Theory, Software Design, Discrete Math, Algorithms, Human Centered ML*, Math of ML*, Principles of ML*, Robust DL*.

* graduate

Work Experience

Adaptional

Machine Learning Engineer Intern

May 2025 - Nov 2025

Founders, Inc.

Machine Learning Engineer | Offseason Founder

Jun 2025 - Jul 2025

Grid

Machine Learning Engineer Intern

Jan 2025 - May 2025

Olive Theory Lab

Co-Investigator

May 2023 - Present

LISP Lab

Deep Learning Research Intern

Jan 2025 - May 2025

Cognitive Systems Engineering Lab

Machine Learning Research Intern

May 2024 - Sep 2024

Jacquemin Farms

Farming Intern

Mar 2024 - Jun 2024

Projects

Virtual clinical trial platform.

Terminal-first data workbench.

Market microstructure simulation.

Full search engine in C.

Beats a 62% win-rate RPS AI.

Research

94%+ accuracy identifying Bach from MIDI.

ComplexNN (Private repo)

Complex-valued NNs to mimick neural synchrony.

Ultrasound classifier, 78% accuracy.

RNN/LSTM on biomechanics sequences.

Honors

Carnegie Hall Finalist • YC Hackathon Top 6 • 3x Hackathon Winner • Full Tuition Scholar

Elsewhere

Blog — thoughts and writing

Photography — photos from travels and everyday life

Contact

I love meeting new people. I respond to all emails: jx.28 [at] dartmouth [dot] edu