UC Berkeley // Math & CS
Yiran HuMathematician & Developer
Math & CS student at UC Berkeley and Co-Founder & CTO of Ambees. I research LLM tutors, stochastic games, and AI policy, and I ship products in Next.js and SwiftUI. Rubik's Cube enthusiast, tennis player, and problem solver with a passion for algorithms and mathematical research.
I design and develop things.
Cofounder @ Ambees.io
I'm pursuing a degree in Mathematics and Computer Science at UC Berkeley. In my free time, I enjoy playing Rubik's Cube, tennis, squash, and building tools.
This fall I lead engineering at Ambees, evaluate course-deployed LLM tutors with the Data Discovery Program, co-author papers on generative AI and organizations with Prof. Trinidad, and mentor CS 88 students through CSM.
I love running, biking, and all kinds of racquet sports. I also love to play guitar; I especially enjoy Jay Chou's music.
Problem Solving
I did a lot of competitive programming / math olympiad.
Learning & Giving
I enjoy learning new things, and teaching others.
Creative Expression
Music and sports fuel my creativity.
Strategic Thinking
Played a lot of Clash Royale, fairly good at it.
Ambees
- Built the full-stack platform end to end with Next.js, React, TypeScript, Neon PostgreSQL, and Vercel.
- Shipped AI voice onboarding on OpenAI Realtime that feeds a multi-stage job matching pipeline.
- Built resumable application automation for Greenhouse, Lever, Ashby, and Workday with Playwright and Browserbase.
- Completed the Georgetown Summer Launch Incubator and pivoted to a recruiter marketplace after customer discovery.
LLM Tutors for All
Data Discovery Program, UC Berkeley Data Science
- Designing LLM-as-a-judge scoring for Berkeley course tutors (Data 8, Data 100, E127), focusing on self-judge bias.
- Measuring judge-human agreement with Cohen's kappa on OpenRouter and NRP models (Qwen3, gpt-oss).
- Writing Python automated checks that flag answer leakage and missed student mistakes in tutor responses.
- Read 10+ LLM tutor benchmarking papers (MRBench, MathTutorBench) and presented findings to the team.
Undergraduate Research Apprentice
UC Berkeley School of Education
- Co-authoring two papers in preparation for Sociology Compass and Organization Theory.
- Coauthored a 27-page policy paper analyzing how 12 large U.S. school districts govern generative AI.
- Synthesized 30+ empirical studies on organizational structure and built a cross-sector case base for four human-AI work arrangements (tool, assistant, co-worker, supervisor).
- Received a donor-funded $3,500 summer research stipend.
Senior CS 88 Mentor
Computer Science Mentors (CSM)
- Lead weekly review sections for CS 88 students on Python, recursion, and data abstraction.
- Record video walkthroughs of past exam problems used by current and future cohorts.
UC Berkeley Department of Mathematics
- Investigated Nash equilibria in Brownian Boost tug-of-war games with resource allocation dynamics.
- Built a web version of the finite game (Trail of Lost Pennies) and compared human play traces to ABMN equilibria.
Small Model Benchmarking
Data Discovery Program, UC Berkeley Data Science
- Benchmarked small models (Qwen2.5, TinyLlama) on accuracy, bias, and compute with HuggingFace Transformers and llama.cpp.
- Built Jupyter evaluation pipelines and designed a RAG curriculum module for a future Berkeley data science course.
Research Fellow
Stanford Mathematics Camp
- Formalized the Rubik's Cube CFOP method as a subgroup chain decomposition and authored a 15-page paper that received a top evaluation.
Early-career recruiting marketplace I co-founded and lead as CTO. Features AI voice onboarding, a multi-stage job matching pipeline, and resumable application automation for Greenhouse, Lever, Ashby, and Workday.
Privacy-first iOS app that tracks headphone sound exposure with HealthKit to protect children's hearing, with Gemini-powered listening analysis, alerts, Live Activities, and widgets. Won 3rd Place and Best Domain at HoyaHacks.
AI-powered reflective journaling platform with Socratic dialogue, cognitive graph visualization of recurring themes, and weekly insight summaries for personal growth.
Mathematical Foundations and Group Theory Applications in the CFOP Method for Solving Rubik's Cube.
Real-time agentic AI mind map generator for lectures, using heap-based topic prioritization for sub-second latency.
Automated MRI scan analysis system using machine learning models to assist medical diagnosis and streamline radiology workflows.
University of California, Berkeley
Bachelor of Arts in Mathematics & Computer Science
Pursuing a double major in Mathematics and Computer Science with focus on theoretical foundations and practical applications.
Computer Science Mentors
Senior CS 88 Mentor
Lead weekly review sessions and create exam video walkthroughs for CS 88 students.
Data Discovery Program
Undergraduate Researcher
Evaluating LLM tutors deployed in Berkeley data science courses.
St. Mark's School
High School Diploma in College Preparatory
Graduated with highest honors. Honored to be part of the Cum Laude Society.
Member
Competed in regional and state competitions, won the 34th WPI Invitational Math Meet.
Rubik's Cube Club
Founder & President
Taught ~10 students to solve Rubik's Cube.
Tennis Team
Captain
Competed on varsity, played 3rd singles and 1st doubles.
Squash Team
Player
Won 2024 New England Squash League High School Boys Team Division III Championship.
Let's Connect
I'm always interested in new opportunities and exciting projects. Whether you have a question or just want to say hi, feel free to reach out!
yiranhu@berkeley.edu
Location
Berkeley, CA