Workshop · Brandenburg

From a conversation to a village square, an internal tool, an automation and an AI agent

Internal tools, automation and AI agents for small teams, delivered on time at a fixed price, from a workshop in Oberbarnim near Berlin.

talk to Casey →

Hello
Casey Romkes
Oberbarnim

I'm Casey. I work out the problem with the people who have it, from Oberbarnim, a village in Brandenburg, with two dogs for company.

A small brief comes in. I build the smallest version that proves the idea. When it can stand on its own, it ships, and I stay close for as long as the people using it need me. One person at the table, with named specialists per engagement.

how I work →the thinking, next door →

Featured workLive · 2026

Knowledge Unitmozilla-ai/cq

ku_7c1f96 · confidence 0.50 · severity high

problemThe CSS `animation` shorthand with an `auto` duration is mangled by Vite's CSS minifier: the built page computes animation-name: none and the scroll animation silently never runs.

actionDeclare animation-name, animation-timing-function, animation-fill-mode and animation-timeline as separate longhand properties, never the shorthand.

Stolperfalle

The memory AI agents don't have: what one session learns, the next one no longer forgets. An open standard, built on Mozilla AI's open schema. Knowledge back into the commons, not into closed silos.

Klosterdorf.de

A static village page turned into a living village square. Ideas, nudges, and structure so the village shows up online the way it does over the garden fence.

What I stand for

An enthusiastic, creative technical designer with a great social touch — and a great community builder.”

Eric Voigt, Senior Lecturer and Coördinator Future Design Factory, on our work together in 2008 · My lifelong inspiration, mentor and Staby-fluencer.

An exceptional Product Owner. Meticulous attention to detail, a get-things-done attitude, and extensive knowledge in the digital mobility services sector.”

Guang Yang, Designer at Diconium (VW Group), 2025

An honest and open discussion partner and a great builder of bridges — gets things done.”

Michiel Gerbranda, Partner & Co-founder, Indicia Strategie & Design

Based: Oberbarnim, Brandenburg. Thirteen years in Germany.
Stations: Yorizon, Product Owner for the European sovereign cloud.StoryKeep, engineering partner: prototype to production platform.

Notes

WORKBENCH2026-10-30EN
The model swap that would have failed without a sound
Replacing gpt-4o-mini under Stolperfalle with a blind twelve-case eval, then auditing the 599 knowledge units it had already written.
github.com/CaseyRo/mcp-stolperfalle Continue on casey.berlin →
REFLECTION2026-09-13EN
The Iron Triangle, One Year On
A year after writing that AI bends the iron triangle, the numbers: commits, tokens, hours, and the one line I did not want to write.
Continue on casey.berlin →
WORKBENCH2026-08-26EN
Five thousand mockups and no way to search them
Building an MCP server on the Mockuuups Studio API, and the four undocumented behaviours that shaped every design decision in it.
github.com/CaseyRo/mcp-mockuuups Continue on casey.berlin →

All notes →

From a conversation to a village squarean internal toolan automationan AI agenta village squarea village square, an internal tool, an automation and an AI agent

Stolperfalle

Klosterdorf.de

The model swap that would have failed without a sound

The Iron Triangle, One Year On

Five thousand mockups and no way to search them

From a conversation to a village square, an internal tool, an automation and an AI agent