Ray Li

Ray Li

Full-Stack Developer · AI Engineer · Dreaming in Code

About Me

I’m Ray Li, a CS and Math junior at NYU passionate about building smart, practical systems. I’ve worked on everything from deploying local LLMs for private financial insights to formal verification and symbolic computation in Lean. I enjoy combining theory with real-world impact—whether it’s writing fast backend code, designing AI-powered tools, or doing quant-style analysis. I’ve interned as an SDE, published research, and love solving hard problems with clean solutions.

When I'm not coding, you'll find me:

Cars
Gym
Traveling
Drones
Vlogs
Blog

Projects

Finance Insight Dashboard
Finance Insight Dashboard
A dashboard Personalized financial insights
  • Created portfolio/market data with real-time data
  • Implemented News Querying and Event forming algorithms
  • Built Knolwedge Graph with news from 2023 to 2025
  • Implemented event prediction algorithms to predict future events

Tech Stack:

Next.js
TypeScript
Tailwind CSS
full stack
production
Medical Service Chatbot
Medical Service Chatbot
Internship at Jupiter Plans. Developed a chatbot helping querying medical services
  • Built a system to control smart home devices via voice commands
  • Implemented machine learning for user behavior prediction
  • Created mobile app interface for remote control
  • Won first place in university hackathon

Tech Stack:

Dify
MCP
Function Calling
AI Agent
ai
production
Knowledge Graph for News
Knowledge Graph for News
Part of Caltech's Hackathon. Developed a knowledge graph for news from 2023 to 2025
  • With Light RAG, built a graph for event from 2023 to 2025
  • Used Neo4J for graph database
  • Implemented news querying and clustering algorithms

Tech Stack:

Agglomerative Clustering
MongoDB
Neo4J
Light RAG
ai
hackathon

Work Experience

ByteDance Inc.
Software Development Engineer Intern
ByteDance Inc.May.19 2025 - August.9 2025

TBD: coming intern

Technologies:

TBD
Jupiter Health
Software Development Engineer Intern – AI Infrastructure & Full Stack
Jupiter HealthFeb.21 2025 - Apr.21 2025

Developed and deployed a production-grade medical chatbot, helping users nagivate Direct Pay health care services

Technologies:

Flask
Dify
Function Call
Qdrant
NLP
300k.xyz
Software Development Engineer Intern – Trading Infrastructure
300k.xyzJune 2023 - Sep 2023

Developed and deployed a production-grade trading infrastructure based on machine learning: data preprocessing, data validation, live prediction, etc

Technologies:

Jenkins
MongoDB
PyTorch
Docker

Resume

Download my resume to learn more about my skills, education, and professional experience.

Contact

Let's build something cool together!
Feel free to reach out if you're looking for a developer, have a question, or just want to connect.