Hi! I'm Sameer.

I'm a PM at Affirm working on the Card Platform (previously ads and affiliate at our Marketplace; before Affirm, ads at Twitter). The more I dig into how the US card payment system actually works, the more I find it fascinating.

As a PM who hacks 🛠️ — a dozen+ side projects (mostly AI-native), with writing along the way.

A few things I'm into right now:

  • Reverse-engineered my son's smart crib for the raw sleep data the official app wouldn't show
  • 35+ book notes across psychology, strategy, survival stories, and philosophy
  • Currently fascinated by the AI hardware stack -- energy, chips, and the strategy behind it all
  • il:lo and James Blake on repeat, 20+ years Chelsea fan, based in LA and happiest when traveling
Sameer Bajaj

On Product & AI

Some of my favorite essays — on product, AI, and the craft.

Experiments & Observations

Things I tried on myself — and what I noticed.

From the Bookshelf

Books that changed how I think — my highest-rated picks.

All book notes →

Latest

What I've been writing about lately.

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