Hey! I'm Daan,
I figure out what to build, and then build it.
here's a bit of my work.
About

I'm the Product Discovery Lead at kaiko.ai, where I work out how AI and careful design can solve real problems across healthcare, and turn that into something a clinician can actually use. It's a new design space: the problems are harder than most software, so how a tool works and is understood matters as much as the model behind it.
I hold a PhD in computational pathology from Radboudumc and a double master's in biomedical engineering and physics education. Ten years of shipping models taught me that shipping is the easy part. Knowing what to ship is the hard part.
On the side I run Alpacus, my freelance practice for engineering and early product consulting. This site holds my work and writing. Reach out via work with me.
Some stuff I have done
Vogelquiz: a bird quiz that fights back
A bird identification quiz that gets genuinely hard, using CLIP image embeddings and pairwise similarity to serve lookalike species instead of easy birds.
Simple WSI viewer
An open-source, browser-based viewer for gigapixel pathology slides, so looking at your data doesn't need a workstation or a license.
Still writing these up, more on the way.
From the kitchen
not everything I ship is software. latest from dekeukenvandael.nl, my personal recipe book.
Writing
In the media
Publications
- The DRAGON benchmark for clinical NLP
- Weakly Supervised Classification of Mohs Surgical Sections Using Artificial Intelligence
- Generating dermatopathology reports from gigapixel whole slide images with HistoGPT






