Jiahao Nick Li

Member of Technical Staff, Physion Labs

jiahaoli@physionlabs.ai /jiahaoli.net /Scholar /GitHub

About

I lead engineering and infrastructure at Physion Labs, where we build critics for world models (see our recent blog posts). I now focus mainly on efficient training and inference, with earlier experience building agents.

Experience

Physion Labs Founding Member of Technical Staff 2026 Apr – Present
  • Engineering lead for the Galileo series of world-critic models (training/inference/data infra).
Altar Founding Engineer 2025 Jan – 2026 Apr
  • Built and own Altards, a general-purpose internal agent with company-wide context, from analyzing user data to handle linear tickets and create PRs (an early, internally-adopted analog to Claude Tag).
  • Engineering and ML lead for our agent products, including a creativity-support agent and a live meeting assistant.
Apple Software Engineer 2024 Jul – 2025 Jan
  • Internal tooling for machine learning workflows
Meta Reality Labs Research Scientist Intern 2022 Dec – 2023 Apr
  • Research on a wearable AI agent for proactive suggestions (OmniActions, CHI 2024).

Education

University of California, Los Angeles Ph.D. 2018 – 2024
Human–Computer Interaction. Advised by Dr. Xiang “Anthony” Chen.
Shanghai Jiao Tong University B.E. 2013 – 2017
Naval Architecture and Ocean Engineering

Selected Publications

  1. Jiahao Nick Li, Zhuohao (Jerry) Zhang, Jiaju Ma. OmniQuery: Contextually Augmenting Captured Multimodal Memories to Enable Personal Question Answering. CHI 2025.
  2. Jiahao Nick Li, Yan Xu, Tovi Grossman, Stephanie Santosa, Michelle Li. OmniActions: Predicting Digital Actions in Response to Real-World Multimodal Sensory Inputs with LLMs. CHI 2024.

See all publications →