Leo Chang

Senior at Princeton Day School, Class of 2027

Hi! Welcome to my personal portfolio website. My name is Leo Chang, and I am a senior at Princeton Day School. I have great interests in computer science, economics and finance, and writing, with a particular passion for machine learning, LLM agent systems, and creative writing. For the past six years I have also taught weekly lessons to children at an orphanage in Malaysia. Feel free to explore, and reach out by email if you have questions or opportunities to discuss.

Projects

LLM Microgrid Agents: Can LLM agents, one per household, negotiate in plain English to fairly share limited solar and battery power during a grid outage?
Stock Price Prediction ML: Does Twitter sentiment actually help LSTM stock prediction? A three-stock, 80K-tweet study says no.
NapkinNotes: A full-stack web app that turns raw class notes into organized, searchable study resources.
Phase Spector: Rewind. Strike. Survive. A top-down arcade shooter where your only weapon is retracing your own movement.

Experience

Research Intern, Prof. Eunsoo Choi's Civil Engineering Lab, Hongik University (Aug 2026)
AI/ML Intern, Multi-Agent Systems & Web, Zhongke Guoguang Quantum (GGQuanta) (Jul 2026)
Research Intern, Prof. Yongfeng Zhang, Computer Science, Rutgers University (Apr 2026 – Present)
Team Member, Chipotle Mexican Grill (Sep 2025 – May 2026)
Intern, Investment Banking, Mundial Financial Group (Jul – Sep 2025)
Content Marketing Intern, Achievable, Inc. (Jul – Oct 2024)
Junior Volunteer, Capital Health Regional Medical Center (Jul – Aug 2024)

Achievements

USA Dance National Champion, Youth Pre-Champ Standard (2025)
Embassy Ball World Pro/Am Finalist, Southern California (2026)
USDC Pro-Am Finalist, United States Dance Championships (2024, 2025, 2026)
NJSIAA District 6, 2nd place, Saber, individual and team (2025)
PClassic, 1st place, UPenn programming contest, Fall 2023 (2023)
Science Olympiad States, 4th, Helicopter (2026)
Science Olympiad States, 5th & 6th, Helicopter, Electric Vehicle (2025)
Science Olympiad Regionals, 3rd, Helicopter (2025, 2026)
National Economics Challenge, 4th, California States (2024)
HackBAC Hackathon, 3rd, Social justice theme (2024)
PYAA Gold Medal, Short story "Dear Lao-Lao" (2026)
Scholastic Silver Key, "Legacy" (2024)
Scholastic Silver Key, "My Grandfather's Voice" (2023)
White Enso Journal, "Six Winter Haiku" (2024)
Creative Communication anthology, Poetry (2023)
Journal of Emerging Investigators, Peer-reviewed paper accepted (2025)