Full stack developer, apps and web
Djay
de Gier
I design and build apps and websites end to end: the interface, the code, the machine learning and the backend that keeps it running.
AntScout
AntScout identifies ant species from photos with AI, and around that sits a species database with caresheets, interactive observation maps and nuptial flight predictions.


- people use AntScout
- 10K+
- on Google Play, 229 ratings
- 4.8/5
- on the App Store, 160 ratings
- 4.7/5
Things I built
Apps, platforms, shops and tools. Some for clients, some for myself.
- AntScoutAnt ID app and platformFlutter, Astro, React, ML, FirebaseLive
- Snake Patrol SurinameConservation appFlutter, FirebaseLive
- Beurs AgendaTrade fair app and siteFlutter, Firebase, AlgoliaLive
- Beurs PlanningPlanning dashboardFlutter, ReactPrivate
- Cut & Create3D clothing configuratorAstro, React, Three.jsLive
- BOMproofPre-release check for engineersAstro, CloudflareIn pilot
- Silk Flower StoreWebshopAstro, FirebaseLive
- De Gier EngineeringCompany websiteAstroLive

I started at ten, writing Scratch at CoderDojo Rotterdam.
- Story
- I learned Scratch and Python there. A few years later I was the one coaching kids, at CoderDojo Bibliotheek Maassluis. At Grafisch Lyceum Rotterdam I learned design and front end, and taught myself mobile development on the side. That side project became AntScout.
- How I work
- I like owning the whole thing: the screens people touch, the model that recognises an ant, the database behind it. I would rather build something specific from scratch than bend a template until it almost fits.
- Off screen
- Gym, macro photography (hence the ant), tinkering with hardware and 3D printing parts for it, and small projects that only exist because I wanted to see if they would work.
- Toolkit
- Flutter
- Dart
- Astro
- React
- Three.js
- Firebase
- Algolia
- Python
- Machine learning





