About Karl-Gustav

I'm Karl-Gustav Kallasmaa — a solo full-stack engineer from Estonia 🇪🇪 and an AI search expert. I build AI products where SEO and AI search are the core growth engine, not an afterthought.

What I'm known for

Getting AI products found. AI search, GEO, SEO, content, and paid acquisition that compounds. I build the distribution layer most technical founders bolt on last — and treat it as the wedge, not the afterthought.

Track record

• Attensira — built a platform to help startups be the brand AI recommends, tracking and improving brand visibility across ChatGPT, Claude, and Google AI search.
• Usanabu AI — built an AI workspace for SEC filings, equity offerings, and corporate transactions.
• Model Diplomat — built an AI prep tool for Model UN, used by 86,000+ delegates for country research, position papers, and debate practice.
• Before founding: Wise (Speed team — transfers in under 20 seconds, then AML), Seldon (ML deployment platform), Papercup (AI-generated voices), and Founder in Residence at Entrepreneur First.

Now

Validating a few new product ideas — all built on AI search as the wedge. Following along in public.

The background

I got hooked on finance at 13 — not for the returns, but to understand how capital moves. That led to economics at university, where my bachelor's thesis was a profitable trading strategy using derivatives on the S&P index fund, then a master's in Computer Science at the University of Tartu focused on Explainable AI. Thinking in markets and incentives still shapes how I build.

Outside the work: reading, music, and long walks — seriously underrated. You might also catch me sending memes at 1 AM right after squashing a tricky bug.