Hi, I'm Joonas. Developer based in Espoo, Finland, and I spend a strange amount of my free time messing with AI.

Most of what I actually build day to day I can't really share, it's tied up in my job at WP SEO AI (and a bit in Joowa, a company I helped start and I'm still a partner in, just not hands-on anymore). This site is the other half: things I build on my own time because I wanted to, not because they shipped for anyone.

That's basically the point of it: Mestari, a personal AI agent, a homebrew fine-tune, and a running habit of trying to break LLMs on purpose to see where they give. If a computer's doing something a little cursed, there's a decent chance I've already got a tab open for it.