I'm Larry, working on
post-training at OpenAI.

I'm Zhandong Lü, but you can call me Larry. I'm based in the Bay Area, California, and currently work at OpenAI on the Post-Training team. I'm a core contributor to GPT-4.5, GPT-5.1 Thinking, and GPT-5.2 Thinking.

• 2024.10 - present  Principal Engineer at OpenAI
• 2024.03 - 2024.10  Senior Staff Software Engineer at OpenAI
• 2024.01 - 2024.03  Senior Staff Software Engineer at Stripe
• 2020.07 - 2024.01  Staff Software Engineer at Stripe
• 2017.07 - 2020.07  Senior Software Engineer at Stripe
• 2015.03 - 2017.07  Software Engineer at Groupon
• 2012.08 - 2014.10  Software Engineer at Umeng (acquired by Alibaba in 2013)
• 2011.09 - 2012.08  Founding Engineer at Miitaa
• 2010.11 - 2012.01  Software Engineer at Baidu
• 2010.08 - 2010.10  Software Engineer Intern at Tencent
• 2007.08 - 2011.07  Harbin Institute of Technology