Hao Zhang

Hao Zhang

Senior Software Engineer
Hao Zhang is a senior software engineer at Snowflake and an Assistant Professor in Halıcıoğlu Data Science Institute and the Department of Computer Science and Engineering at UC San Diego. Before joining UCSD, Hao was a postdoctoral researcher at UC Berkeley working with Ion Stoica (2021 – 2023). Hao completed his Ph.D. in Computer Science at Carnegie Mellon University with Eric Xing (2014 – 2020). During PhD, Hao took on leave and worked for the ML platform startup Petuum Inc (2016 – 2021). Hao’s research interest is in the intersection area of machine learning and systems. Hao’s past work includes Vicuna, FastChat, Alpa, vLLM, Poseidon, Petuum. Hao’s research has been recognized with the Jay Lepreau best paper award at OSDI’21 and an NVIDIA pioneer research award at NeurIPS’17. Hao cofounded the nonprofit LMSYS Org (2023) which maintains many popular open models, evaluation, and systems.

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