Yongyuan Li

Software Engineer - Full-Stack - UW CS 2026

Computer Science senior at UW Seattle with experience in full-stack development, backend APIs, and data engineering. Enjoys shipping production features end-to-end and mentoring other students.

Experience

Software Engineer Intern

EdTech Startup · 2025–2025

Built backend APIs using Node.js + Express to support course recommendation features used by 3,000+ active users. Designed PostgreSQL schemas and optimized queries, reducing response latency by ~30%. Integrated RESTful APIs with frontend (React), improving user engagement metrics by 15%. Deployed services on AWS EC2 with Docker, ensuring stable uptime during peak usage.

Undergraduate Teaching Assistant

University of Washington - CSE 142 (Intro to Programming) · 2025–2025

Led weekly quiz sections for 30+ students, explaining core programming concepts (Java, OOP). Debugged student code and provided guidance on assignments and projects. Assisted professors in grading and designing coursework materials.

Research Assistant

UW Data Systems Lab · 2024–2024

Assisted in building a data processing pipeline using Python + Pandas for large-scale log analysis. Cleaned and processed datasets (~10GB), improving data usability for downstream ML models. Contributed to benchmarking system performance under different workloads.

Education

University of Washington, Seattle

B.S. · Computer Science · 2022–2026