PS

Pei S.

AI Research Scientist

Pei S. is an accomplished AI Research Scientist currently employed at Meta since June 2025, focusing on inventing SuperIntelligence. Prior to this role, Pei S. was a Principal Researcher at Google DeepMind from October 2023 to June 2025, contributing significantly to the Gemini project's post-training phase, including thinking and coding, along with inventing numerous core recipes. Pei S. also served as a Senior Staff Research Scientist at Waymo from 2017 to September 2023, specializing in machine learning research, and worked as a Software Engineer at Alluxio from April 2016 to July 2017 and at Google from July 2011 to August 2016. Pei S. holds a Bachelor's degree from Tsinghua University and has pursued a Master's degree at Carnegie Mellon University.

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