Always-On Context vs On-Demand Skills
codebrief writes what a repo is. skillbrief writes how to work in it. Why I shipped two zero-dependency CLIs instead of stuffing one rules file with everything an agent might need.
Frontend engineer · Netherlands
I build products people actually use — on the web and in the app stores.
Co-founder of TemCraft Tech. React, Next.js, TypeScript, and React Native — 9 products live today on the App Store, Google Play, Windows, npm, and the web.

9
Products live today
5.0★
App Store rating · 25 ratings
874
npm downloads, all time
21 Oct
Last release · Daily Skyline 1.30.0
Live from the App Store and npm · refreshed daily
Featured
The products I lead with. Full index — including earlier builds — on Work.
Proof
No invented testimonials — check the App Store listings, npm packages, and past roles yourself.
Teaching
Taught frontend at euroTech Study GmbH and Wise Quarter (2024–2026) — React, Next.js, and project-based curricula.
App Store
Daily Skyline and Courai shipped on the App Store; ratings on case studies come from the live listing.
Open source
codebrief and skillbrief published on npm and used on this site before asking anyone else to try them.
Company
Co-founder of TemCraft Tech — client and product frontend work in React and Next.js.
What I do
React, Next.js, TypeScript, and Tailwind CSS. Server components, App Router, and production deployment on Vercel.
React Native and Expo — from prototype to App Store. Daily Skyline and Courai are live iOS products.
Supabase, Firebase, Node.js, Django, and .NET when a product needs it. PostgreSQL for persistence.
App Store Connect, RevenueCat, npm publishing, CI/CD, and the full lifecycle from scope to production.
Background
Oct 2024 - Present (2 yrs)
TemCraft Tech
May 2025 - Feb 2026 (9 mos)
euroTech Study GmbH
Oct 2024 - May 2025 (7 mos)
NAGE
Thoughts & Notes
What's next?
Frontend roles or scoped product work through TemCraft — book a short intro or write with what you need.