Hi, I'm Chaoyu Wang 👋

I'm an AI/ML engineer focused on LLM alignment and fine-tuning,
currently self-studying at UC Berkeley and building toward AI research.

🔭 What I'm working on

• Agent SFT pipelines with LoRA fine-tuning (Qwen3, custom tool-call alignment)
• RAG systems with hybrid retrieval (BM25 + Dense, Cross-Encoder reranking)
• GRPO/RLHF alignment for domain-specific LLMs

🛠️ Tech Stack

ML/AI: PyTorch · HuggingFace Transformers · vLLM · LLaMA Factory
Infra: RunPod · FastAPI · Docker
Dev: Python · Next.js · PostgreSQL

🎓 Background

• M.S. Engineering & Applied Mathematics — Northwestern University (2025)
• B.S. Applied Mathematics - University of California, San Diego (2024)

📫 Reach me