About me
I'm a machine learning engineer at Meta, working on AI and ML systems for ads ranking — helping small businesses reach the right people. Before that, I was Head of AI at Niural, where I built a vertical HR and payroll intelligence system from the ground up.
I'm a full-stack engineer across the data stack — data science, data engineering, backend, and ML — with a focus on end-to-end product building. I care about making data-driven decisions and building systems that automate the right things. I studied Statistics at Columbia University.
I was born and raised in China, moved to the US for school, and have been here ever since. I write in both English and Chinese — mostly English here, but some posts sneak out in Mandarin.
This blog
I started writing here as a way to think more clearly. The act of writing forces me to take fuzzy half-formed ideas and make them concrete.
Topics drift, but they usually fall into a few buckets: technology and software engineering, AI and its implications, productivity and how I work, and essays on life, decisions, and what matters.
There's no schedule. I write when something feels worth saying. If you want to be notified, subscribe via RSS or follow me on Twitter.
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Contact
Best way to reach me is email: puleipai4@gmail.com. I read everything and try to reply, though it may take a while.