I’m an Agent Engineer at Sierra.ai. I graduated with a Master’s in Electrical Engineering and Computer Sciences from UC Berkeley in May 2025, advised by Professor David Wagner. My research focused on training language models to follow an instruction hierarchy, specifically looking at improving system prompt robustness in LLMs and prompt injection robustness in reasoning models. Before that, I completed my Bachelor’s degree in Computer Science, also at UC Berkeley.
Research
- A Closer Look at System Prompt Robustness
Norman Mu*, Jonathan Lu*, Michael Lavery, David Wagner
arXiv preprint; NeurIPS Safe Generative AI Workshop
Projects
Work Experience
- Sierra.ai — Agent Engineer
San Francisco, CA • Jun 2025 - Present - Berkeley AI Research, Wagner Lab — Research Assistant
Berkeley, CA • May 2024 - Aug 2024 - Deepgram — Software Engineering Intern
Ann Arbor, MI • May 2023 - Aug 2023 - Meta — Enterprise Engineering Intern
Sunnyvale, CA • May 2022 - Aug 2022
Teaching
- CS 189 Machine Learning — Spring 2023
- CS 61A Structure and Interpretation of Computer Programs — Fall 2022