eBrain.ai
Co-founder & CTOA secure AI assistant for entrepreneurs, right in WhatsApp. Email, calendar and meeting notes work together, with you in control of the actions it takes.
Meet eBrainStein Pleiter.
Building with AI.
I build useful AI products and work with the people making models better.
Ideas into things
people can use.
My work brings together product engineering and AI training. I’m interested in what happens when a model leaves the lab and meets the real world.
10x.Team
AI trainingI direct AI training at 10x.Team, connecting human expertise with the work of improving models. A training loop with 80,000 talent signups.
Explore 10x.TeamUnderstanding
what’s inside.
Alongside building with AI, I’m interested in how it works. My computer science research explores mechanistic interpretability: looking inside models to understand how they arrive at an answer.
Research & academic workFrom outputs to understanding.
From Amsterdam
to Toronto.
My background is in computer science at the University of Amsterdam. In 2025, an exchange at the University of Toronto took me into deep learning and mechanical engineering.
Today, I bring those interests together in the products I build and the teams I work with. This is a small window into that work. The academic folio goes a bit deeper.
More about my backgroundLet’s make
it happen.
A project, an idea, or just a good conversation.