Helsinki, Uusimaa, Finland
Hi! I’m a co-founder and CTO at Flow AI, where I lead field engineering and work closely with our customers to understand and meet their needs. We build specialized harnesses for analytical SaaS: the runtime layer that decides what an agent can see, how it searches, how it plans, what it can safely do, and how it works across many tenants. At Flow AI, we have shifted from a fully managed runtime into a semi-managed, developer-facing harness in Rust + Python. We give engineers and domain experts a direct way to adapt their own flows, data foundations, business rules, and critical APIs into made-to-purpose primitives for agents. I care about agent systems that are intentional: semantic knowledge injected into the flow, efficient agentic search over known data shapes, high-performance planning state machines, and human-in-the-loop paths where required. Often this means agents sitting on top of classical ML, critical APIs, and domain-specific operations rather than generic tools alone. If you are building at the frontier of agentic analytical SaaS and want a more deliberate alternative to generic harnesses, I’d like to hear from you. We are looking for design partners with ambitious goals, high speed, and highly intentional use cases. DM me here or email [email protected]. Based in Helsinki. I'm frequently in SF, London, and elsewhere in Europe. I write about all these things at https://blog.karolus.rs and you can find me in X as ksariola.
We build specialized harnesses for analytical SaaS: the runtime layer that decides what an agent can see, how it searches, how it plans, what it can safely do, and how it works across many tenants.
Built an early AI email assistant (100k+ users). Acquired by Maestro Labs in 2024. Continued as Flow AI with the same team and investors.