YOOBIN CHANG
Stony Brook,USA
Summary
Computer Science student skilled in developing data-driven applications. Led user research for a real-time campus space allocation system and created EcoSnap, an award-winning AI recycling app. Proficient in C, Python, and Java, with a dedication to building impactful software solutions.
Overview
1
1
Certification
3
3
years of professional experience
Work History
Data Structures Teaching Assistant
Stony Brook University
Stony Brook, New York
08.2026 - Current
- Lead weekly office hours, recitations, and exam reviews
- Help students debug Java programs and reason through data structures, algorithms, and runtime tradeoffs
- Explain implementation decisions and problem-solving strategies through targeted questions rather than providing answers directly
VIP Researcher & Developer
Stony Brook University
Stony Brook, USA
01.2026 - Current
- Supported user research and reviewed 185+ student responses to identify availability, location, and usability needs for real-time campus study-space product.
- Turned findings into product requirements document and technical direction for scalable campus-wide rollout, collaborating with stakeholders on scope and priorities.
Student Office Assistant
Green River College
Auburn, WA
07.2024 - 03.2025
- Managed weekly Excel reports from more than 40 mentors to ensure program efficiency.
- Checked inventory and restocked training supplies for international students' class sessions to keep classes fully equipped.
- Compiled attendance and incident notes after sessions, producing concise summaries for program review.
International Peer Mentor
Green River College
Auburn, WA
09.2023 - 03.2025
- Taught campus navigation and resource-use workshops for new students, reducing first-week confusion.
- Organized peer meetings that increased new students' participation in campus clubs and events.
- Led New Student Orientation for 300+ new international students.
Education
BA - Computer Science, Applied Mathematics & Statistics
Stony Brook University
Stony Brook, NY05-2028
Associate of Arts and Sciences - COMPUTER SCIENCE
Green River College
Auburn, WA03-2025
Skills
- Languages: Java, C, Python, JavaScript
- Frameworks/Libraries: React, Nodejs, Django, Pandas, NumPy, scikit-learn
- Database/APIs : MongoDB, Supabase, REST APIs
- Testing/Tools : JUnit, Pytest, Git/GitHub, Linux/Unix, GDB
Projects
EcoSnap — Recycling Web App, Winner in WiCS HopperHacks 2026 | React, Vite, Three.js, React Three Fiber, Gemini API
- Built an AI-powered web application that analyzes uploaded waste images with the Gemini API and provides real-time recycling and reuse recommendations.
- Developed an interactive gamification system where users earn points for recycling and grow a 3D virtual cherry blossom forest using Three.js and React Three Fiber.
- Implemented persistent user progress for recycling statistics, points, and forest growth while integrating the AI image-analysis workflow into a React/Vite frontend.
MoodMix — Reliability-Aware Music Recommender | Python, Pytest
- Developed a content-based recommendation engine that ranks songs using weighted genre, mood, and energy signals and generates explainable scoring for each result.
- Engineered a reliability gate and input-validation pipeline that limits or rejects low-confidence and invalid recommendations instead of returning arbitrary results.
- Built automated regression and end-to-end tests covering ranking, guardrails, and reliability behavior, achieving 9/9 unit checks and 6/6 evaluation cases.
Certification
- CodePath - Foundations of AI Engineering
- Google AI
Timeline
Data Structures Teaching Assistant
Stony Brook University
08.2026 - Current
VIP Researcher & Developer
Stony Brook University
01.2026 - Current
Student Office Assistant
Green River College
07.2024 - 03.2025
International Peer Mentor
Green River College
09.2023 - 03.2025
BA - Computer Science, Applied Mathematics & Statistics
Stony Brook University
Associate of Arts and Sciences - COMPUTER SCIENCE
Green River College