---
date: 2026-06-02
---

I'm an AI researcher. I did my PhD at Princeton University, advised by [Prof. Karthik Narasimhan](https://www.cs.princeton.edu/~karthikn/). I study AI and ML for natural language processing. My research interests include agentic AI, AI for software engineering, and Human-AI interaction. I'm best known for my work on [SWE-bench](https://arxiv.org/abs/2310.06770) and [SWE-agent](https://arxiv.org/abs/2405.15793).

I did my B.S. in computer science at the University of Utah, where my thesis was supervised by [Prof. Ellen Riloff](http://www.cs.utah.edu/~riloff/). I grew up near Salt Lake City, Utah.

I'm deeply interested in science and technology and how they can influence the trajectory of our civilization.

In addition to my interests in science and technology, in my free time I like reading/thinking about philosophy, {Chinese, Russian, Turkish, Japanese} history, urban planning, sociology of scientific knowledge, and art/architecture.

[CV [pdf]](https://cdn.closji.com/@closji/cv.pdf)

## Contact

| | |
|---|---|
| email | [carlosej@cs.princeton.edu](mailto:carlosej@cs.princeton.edu) |
| email | [me@closji.com](mailto:me@closji.com) |
| twitter | [closji](https://twitter.com/closji) |
| bluesky | [closji.bsky.social](https://bsky.app/profile/closji.bsky.social) |
| github | [closji](https://github.com/closji) |
| linkedin | [closji](https://www.linkedin.com/in/closji/) |
| orcid | [0000-0001-9370-3909](https://orcid.org/0000-0001-9370-3909) |
| substack | [closji](https://substack.com/@closji) |
| signal | closji.01 |
| wechat | closji |
| location | San Francisco, CA |