Co-founder, CTO at AltisWe're building Altis, the measurement layer for generative AI in advertising agencies. We track usage and spend across every project, every client, and every prompter, automatically. We have a working demo and two paying design partners, one in Belgium and one in the UK.We're looking for a third co-founder to lead engineering. You would join Sébastien and Laurent, own the technical direction from day one, build the first version of the product, and grow the team as we raise our pre-seed and beyond.Who we are looking forSomeone who has built and shipped real products beforeSomeone who takes pride in shipping over architectureSomeone who wants a real co-founder relationship, not a salary plus stockSomeone who can talk to design partners (customers) directly, push back when we are wrong, and weigh in on every meaningful decisionSomeone who owns the technical roadmap end-to-end, from the first MVP decision to hiring the engineering team that scales itExtra points if you have seen a startup from the inside, as an early hire or as a previous founderWhat you would be buildingThe data layer that pulls usage and spend from every AI tool an agency runs, from credit-based tools like Higgsfield, Krea, and Cursor to API-based tools like the LLMs and beyond. Desktop and web versions.The platform layer for the next generation of this category, agentic AI workflows and MCP-based observability, where most of the AI economy is headingThe attribution engine that turns raw usage data into something agencies can actually act on, mapping every prompt, generation, and request to the right project, client, and prompter, with two-way integrations into the tools agencies already use.What is honest about this roleIt is pre-pre-seed. We have not raised yet, targeting 1.2 to 1.5 million euros for Q3 2026Until then, compensation is lean and equity-heavyThe market is new and we are creating a category, which means longer cycles in year oneWhat you get in returnMeaningful co-founder equityTotal autonomy over how we buildA clean cap table with no baggageEarly traction: two paying design partners on day oneA real shot at category leadershipHow to applySend us a short note about what you have built, what you are looking for, and one thing about Altis that interests you or that you would push back on. No CV needed.sebastien@09am.ai laurent.d@09am.ai