I am a Research Engineer at Character.AI, working on post-training and safety & alignment for large language models. I received my Ph.D. in Computer Science from Purdue University in 2026, advised by Prof. Xiangyu Zhang, where my research focused on AI security. I obtained my Bachelor’s degree in CS from Shanghai Jiao Tong University in 2020, where I was advised by Prof. Haojin Zhu.

Education

• Ph.D. in CS, Purdue University, 2021-2026
• B.S. in CSE, Shanghai Jiao Tong University, 2016-2020

Work experience

• 07/2026 - now: Research Engineer
  • Character.AI
  • Post-training and Safety & Alignment
• 09/2025 - 12/2025: Research Intern
  • Google, Mountain View, CA
  • Multi-agent system for privacy leakage detection in Android apps
• 05/2025 - 08/2025: AI Engineer Intern
  • GE HealthCare, Bellevue, WA
  • LLMs and VLMs; recipient of the Impact Award
• 07/2021 - 05/2026: Graduate Research Assistant
  • Purdue University
  • Supervisor: Prof. Xiangyu Zhang
• 07/2020 - 06/2021: Research Assistant
  • Southern University of Science and Technology
  • Supervisor: Prof. Shin Hwei Tan
• 03/2020 - 05/2020: Research Intern
  • Tencent, Shanghai, China
  • Supervisor: Huixin Ma
• 07/2019 - 09/2019: Research Intern
  • Columbia University
  • Supervisor: Prof. Suman Jana
• 01/2018 - 06/2020: Undergraduate Researcher
  • Shanghai Jiao Tong University
  • Supervisor: Prof. Haojin Zhu