So in terms of your personal background, I'm always curious: where did you grow up? What kind of kid and teenager were you? I'm always trying to reverse engineer those top AI researchers. Where do they come from, and how did you become who you are?
I grew up a bit all over the place in Europe. I moved around quite a bit. So I was actually born in the Netherlands, and I moved when I was seven to Switzerland. So my dad is from Switzerland and my mom is from Germany. So I did most of my school and the beginning of my high school in Switzerland, mostly in French and also in German in parts. And then at age 15, I think, I moved to Italy, where I finished high school until I was around 19.
And at that point, I was going to go to ETH Zurich to do my studies, but I think just by random events, one morning I just looked up the top universities in some kind of ranking, and I saw Cambridge was at the top. So I thought, I'll just apply. Why not? And, yeah, a few months later I got the acceptance letter. So I decided to move to Cambridge, where I did my undergrad and master's in the Computer Lab.
And when you were growing up, were you just a super math-strong kind of kid, computer science kind of kid?
My dad has a technical background. So I remember, when I was 10 or 11, starting to program a bit with him and learning. And I kind of always liked that. And then I always had, like, easiness in math and science at school. I remember never having to really study for math exams, but always doing quite well. That definitely changed at university. But that was my high school experience.
And what was your path from school into where you are today?
Yeah, so that's, again, a bit of a lucky moment, I would say. One of the lecturers we had in my master's was someone who was also a researcher at DeepMind. And I just remember at the end of the last lecture, I was packing my stuff, and I was like, oh, I'll just ask him for a referral. What's the risk, right? He might just say no, but whatever. And so I actually took the courage and I went up to him and asked if he would give me a referral.
He was like, sure, send me your CV and I'll see what I can do. And that's kind of how I got my interview at DeepMind. This was in 2018. And so I joined DeepMind at the time, just DeepMind, not Google DeepMind, as a research engineer after university.
And what did you do at first, and how did that evolve to being one of the pre-training leads on Gemini 3?
Yeah, so at the beginning, having joined DeepMind and DeepMind being known for RL, the first project I managed to work on, or decided to work on, was something on the RL side. So specifically, we were training some unsupervised network to learn keypoints on Atari environments and try to get the agent to play Atari. So I did this for about six months, maybe. It wasn't enough, or in the sense I didn't like the synthetic aspect of this. I always wanted to work more on real-world data and have more of a real-world effect.
I think in general, I like to build things and build things that work. I don't really like the academic pure research part. And so that kind of drove me to start working on representation, so creating these, or training these neural networks that have good representations to do different tasks. And one funny anecdote here is something I tell a lot of the people on my team, but the first effort I joined on this was called Representation Learning from Real-World Data. And at the time, we had to add this "from real-world data" to the name of the project because people would assume otherwise it would be synthetic environments or synthetic data.