This site's second brain
A gated LLM that answers questions about me from a fixed, cached context — with a real access gate, evals, and abuse defenses in front of it.
- Next.js
- Auth.js
- Claude
- Vercel
Software & AI engineer
Tomi Lupsakko
I build software and AI systems end to end — from the model call to the deploy.
I'm a software engineer who works across the stack and into applied AI: shipping products, wiring up LLMs so they actually behave, and caring about the parts most people skip — correctness, security, and the last 10%. This site is one example. Most of it is a normal portfolio. The interesting part is behind the gate: a second brain you can question directly.
second-brain — sealed● locked
?What has Tomi actually shipped?
?How does he approach a system he's never seen?
?Where is he strongest — and where isn't he?
?What's he like to work with?
track record
full CV is gated →- 2023 — now
Building AI-powered products, end to end.
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- 2020 — 2023
Full-stack engineering across web and infrastructure.
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- before
Where it started.
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selected work
all work →A second project
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- TypeScript
- Postgres
A third project
Placeholder blurb. Replace with a real project and its one true result.
- Python
- LLMs