👋 Hello, I'm Julien!
I lead the development of frontier infrastructure at Datadog, where my team spearheads research on RL systems and products. We are building the future of software development: a generative continuum spanning code generation, deployment, monitoring, and iteration—all driven seamlessly by models with a native understanding of observability.
Datadog
In 2023, I cofounded Adaptive ML, where we built one of the first reinforcement learning platform adopted by Fortune 500 companies. In 2026, Datadog acquired Adaptive ML. Before, I led some cool open model releases in 2022 and 2023. During my Ph.D., I also explored the use of optical co-processors to train neural networks.
01 / Interests
From an AI research perspective:
- Systems scalability. Scaling models, compute, data, and context has been the main driver of progress in AI. I am passionate about the challenges brought forth by this big science approach, at the crossroads of large-scale engineering and research.
- Agency & perception. Agentic behavior requires model to observe the world and take actions. I am interested in how we can equip agents with super-human perception in the digital domain, eventually considering observability data streams as a distinct modality.
- Philosophy of mind. I am fascinated by how models think and how we can use them to build an empirical picture of the mind. Specifically, answering questions related to the role of language in our intelligence, the emergence of an inner dialogue, or our ability to reason natively in some modalities.
From a personal perspective:
- Storm chasing. Ever since I was a kid, I have been captivated by severe weather. Now that I live in the U.S., I get to fairly regularly chase & photograph some beautiful storms.
- Underwater photography. I am an avid diver, and love to photograph underwater creatures both large and small, cute and scary.
Finally, I have also angel invested in some fun companies: Iterate, Symbiotic Security, Macrodata Labs, Ooakdata.
02 / Updates
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