About
Juha Huotari
I’m a solution analyst in Finland working on data platforms and integration-heavy systems. My background spans insurance data platforms and regulatory reporting in wealth management—usually where business rules, operational processes, and durable data have to agree.
This site
kotona.app is where I write down how a system works while the details are still available: what failed, what changed, why a design was chosen, and what would have to be checked before doing it again.
Most of the notes concern data platforms, declarative infrastructure, contract-first software, and agent-assisted engineering. I also follow a few questions into energy, hardware, organizations, and the built environment when there is a real operating problem underneath them.
Most of these notes ask the same practical questions: who decides, where the truth lives, what proves it, and how a system recovers when it changes or fails.
How to read it
Projects describe things that exist: what they do, how they are put together, what works today, and when I last verified it.
Notes preserve decisions, failures, operating rules, and reference material worth finding later. Some state a rule I use now; others connect several pieces of work, test an unfinished idea, or record what happened in a project. The labels show which kind of note it is, how strongly I hold the claim, and whether it is still current.
Explorations are worked ideas, not automatically plans, forecasts, or recommendations. Sometimes investigating the question is the whole point.
The writing aims to explain real systems plainly, then draw out the lesson where it transfers. It also serves as retrieval material for future work. Some notes use a more personal or creative register when the subject benefits from it.
Agents and authorship
Agents contribute substantially to the inspection, comparison, implementation, and drafting behind this site. I provide the source material and constraints, make the corrections, verify the claims, and decide what is published.
Generated output is working material. The published claim is mine.
For a longer account of the site’s authorship and editorial process, see The workshop is learning my accent.
This is a personal site. The views published here are my own and do not represent my employer.