Hi, I'm Ankit — a product builder at heart. My career has moved between software engineering and product management, building consumer products and experiences that make people's lives easier, often by challenging the norms and inventing new interaction models. I spent several years building experiences for Alexa, shaping how people live with voice across the smart home, and I remain fascinated by voice as an interface, especially when it's delivered through hardware purpose-built for it. Along the way, I took a brief detour into finance during my MBA in London.
Today I'm building Premrajka LLC, on a mission to run a one-person company powered by AI agents. This site is its home: a portfolio of the products I build, and a place for my musings along the way.
Here you'll find what I've shipped and how I built it, alongside deep dives into whatever I'm curious about — robotics, AI, product, finance. Those rabbit holes start as long, wandering conversations with Claude; I distil the useful ones into something easy to digest, with my own take on what actually mattered. Partly so I can find it again, and partly so you don't have to have the conversation yourself.
Products
Products I've built and shipped under Premrajka LLC.
Posts
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World models, from the ground up
Every AI company now claims a "world model". Here's what one actually is, and how to tell.
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Learning to walk, one simulated fall at a time
How reward design and massively parallel simulation teach a robot to walk — then map the concepts onto a real open-source repository.
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Where robot training data comes from
Four ways to get a robot the data it needs, and the quantity-versus-fidelity trade-off behind each one.
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Demystifying AI models in robotics
Untangling two kinds of AI: ones that imagine the world, and ones that act in it.