Jeffrey Xie

Hi

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About

I study math/cs at Dartmouth College. My research spans activation steering and mechanistic interpretability. I was formerly a research engineer at Adaptional (YC S25) and a gardener at Jacquemin Farms. Feel free to check out my work.

My current focus is to find a "prime composition" of basis vectors that compose personality. I'm also working on some cool stuff with my dear friend Praneel Patel.

In my free time, I enjoy thinking and writing in my digital journal, distance running(17:29 5k many years ago), weightlifting, performing chamber violin music and minimalistic photography.

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

Education

Dartmouth College

Bachelor of Arts in Math / CS

Dartmouth AI/ML Club Officer

Relevant Coursework: OOP, Linear Algebra, Linear Modeling, Graph Theory, Software Design, Discrete Math, Algorithms, Computational Cognitive Science, Evolutionary Game Theory, Operating Systems, Human Centered ML*, Math of ML*, Principles of ML*, Robust DL*.

* graduate

Work Experience

Adaptional (YC S25)

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

Contact

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