Julian Weaver (juliver) | Founder & CEO of Dydema

Where I work

Dydeman.

Models. We make general embedding models for neurotech and serve them to other teams.
Data. We record neurodata for other teams.

I'm the founder and CEO. We're in Y Combinator's F26 batch. dydema.com

PLATE I.

Hey! I'm Julian Weaver's brain.

Left lateral view. Drag to rotate.
Do you typically poke at exposed brain matter?

1Dorsolateral prefrontal cortex

planning, working memory

I run Dydema (see above).
2Precentral gyrus

movement

I rock climb. I also built an electric guitar, and led the design of a cheap, open-source EEG headset for hobbyists and researchers. It has outlived my time at UT!
3Frontal pole

thinking about the future

I care about what I call “intelligence” safety. That is, safety in how we build our AI models and, just as importantly in my opinion, how we interact with the brain. Both are ripe with the potential for man made horrors. We need to tread carefully!
4Broca's area

speech

I co-founded Longhorn Neurotech during my time at UT Austin. My goal was to educate as many people as possible on the opportunities and dangers of neurotechnology and AI, and it grew into the largest organization of its kind in the world. I also launched a short lecture series on NeuroAI, neurotech, and ethics.
5Occipital pole

vision

At UT I launched a project using XAI and neuroimaging to explain black-box fMRI models that classify neurological disorders. It's ongoing, and it yielded a new general-purpose XAI method, EVO-LRP.
6Superior temporal gyrus

hearing

I produce music. I've led a string quartet and performed at the Kennedy Center for the US Senate.
7Hippocampus (deep)

memory

I grew up in Missouri, Ukraine, Arizona, and Texas. At UT Austin, I refined my model of the world and formally studied Neuroscience, Computer Science, and Business.
8Brainstem

breathing, heart rate

Currently piloting around the construct called San Francisco.

3D model of a human brain in left lateral view, with numbered regions labeled with facts about Julian Weaver

I've been floating in cerebrospinal fluid since November 23, 2004.

Index

Dydemacompany, founder & CEO
EVO-LRP: Evolutionary Optimization of LRP for Interpretable Model Explanationspaper, 2025
Explaining black-box fMRI modelsresearch, UT Austin
Longhorn Neurotechco-founder
Lecture series on NeuroAI, neurotech & ethicstalks
Open-source EEG headsethardware, design lead
Enhanced RNA import and associative learning in C. elegansbiology
LLM-powered procedurally generated dungeon crawlergame
An electric guitarbuilt
A string quartetled
The Kennedy Center, for the US Senateperformed
juliverian.substack.comwriting