Hello. I am a scientist & engineer at Google DeepMind.
I am on the Gemini core team working on RL & post-training.
Recently, I was model co-lead & co-captain of the Gemini Deep Think model that achieved the historic IMO Gold Medal 🥇.
Previously, I co-led early LLM efforts at Google Brain including PaLM-2, UL2 and Flan-2. While I was a researcher for most of my professional life, I also took a short break to be a co-founder of a "unicorn" AI startup in 2023-2024.
As a side quest, in 2025, I help built and co-founded GDM Singapore together with Quoc Le. I currently lead the Singapore Gemini team.
I enjoy badminton & classical piano. 
2025 introspections: my year back at Google
Reflecting on 2025 and my one year back at Google Deepmind’s Gemini team. From being back to research to winning the historic IMO gold medal, along with starting GDM Singapore, I reflect on what a wild year it has been.
Returning to Google DeepMind
Returning to Google and recounting my experiences as a startup co-founder.
What happened to BERT & T5? On Transformer Encoders, PrefixLM and Denoising Objectives
A Blogpost series about Model Architectures Part 1: What happened to BERT and T5? Thoughts on Transformer Encoders, PrefixLM and Denoising objectives
Training great LLMs entirely from ground up in the wilderness as a startup
Chronicles of training strong LLMs from scratch in the wild
2022 in Review: Top language AI research papers + interesting papers to read
Here are some of the best language AI / NLP papers of 2022!
On Emergence, Scaling and Inductive Bias
Some thoughts on emergent abilities and scaling language models.