Fathin Dosunmu — Founder & Engineer

I’m a founder-engineer. I turn difficult AI ideas into products people can use and trust—from the product wedge and architecture through pilot and production.

Today I’m Founder & CTO at CodesDevs in Tallinn. Previously, I built production fintech at Monese and Zing and worked as a founding engineer at Solitude.

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Selected work

BackToBirth AI

Aviation certificate verification, built from scratch. AeroBench scores 95.8% F1 across 141 real certificates.

AgentSIM

A telecom identity layer for browser agents that hit SMS and OTP verification in real workflows.

Solitude

Founding engineer across product, source access, context and memory, identity, billing, and production delivery.

Prism

An open-source adversarial AI system where one agent proposes and another is paid to find the flaw.

About

Fathin smiling in a candid low-light photograph — Somewhere between builds.

I don’t wait for the finished spec. I move between the founder room, product decisions, architecture, implementation, and the customer conversation.

Cybersecurity by training (MSc, TalTech); product building by practice. I’m drawn to domains where the software has to be measurable, secure, and commercially useful.

Let’s chat

DM me on X or LinkedIn with whatever you’ve got on your mind—a product idea, a strange technical problem, or something still half-formed.

DM me on X ↗ Message me on LinkedIn ↗