A CTO's judgment. Without a CTO's salary.
You need senior technical decisions on architecture, hiring and AI roadmap, but a full-time CTO doesn't fit this stage. We provide that leadership fractionally: judgment, execution and a team that understands how to build with AI.
Talk to a fractional CTOWhat we leave in place
AI in production,
with human control.
We don't build demos or standalone chatbots. We put AI to work inside your product with three things from day one: evaluations, limits and cost per result.
Evaluations
A set of real cases we use to measure every prompt or model change, so we know whether it improves or degrades before it ships.
Limits
What AI can do on its own and what needs human approval, written down and enforced in code, with the option to switch it off if something fails.
Cost per result
We measure what each useful result costs, not each call, and review the spend every month.
What we set up here
Keeps the team's quality bar by reviewing every PR, so you grow without silently piling up technical debt.
Covers critical flows with automated tests so a small team moves fast without breaking what already works.
Keeps architecture and decision docs up to date, essential for onboarding new hires without friction.
What we measure
Decisions per Week
Measure how many blocking technical decisions get resolved each week instead of staying stuck. Effective fractional leadership unblocks the team, it doesn't add meetings.
Problems we solve
Problems we solve
Technical decisions in the dark
The founding team isn't technical, or is technical in another area. Architecture and stack decisions are made on intuition and paid for dearly later.
Hiring the first engineers
You don't know who to look for, how to evaluate them or which profile you need first. A bad first hire stalls months of roadmap.
A roadmap with no technical compass
Investors and customers ask for different things and everything feels urgent. Without senior technical judgment, the team builds the wrong thing at full speed.
What we leave in place
How we work
3-hour diagnosis (€300, VAT not included): technical map, risks, roadmap and estimate.
We work with an hour bundle or as a Monthly or Hands-on CTO, with the HALO method cadence.
Every deliverable is closed with a verified signal, and you see every hour in your portal.
Frequently asked questions
Do you only work on AI products?
No. We work with startups and companies building a digital product: an app, a platform or connected hardware. AI is our specialty, not a requirement.
How does the diagnosis work?
It's 3 hours: a session of about 2 hours and a written plan with the technical map, risks, roadmap and an estimate. It costs €300, VAT not included. If you then book hours with us, the €300 is deducted from your first invoice.
Who owns the code?
You do, 100% and from day one, along with the documentation and deliverables. No vendor lock-in.
Let's talk about your specific case
Tell us what you need and we will respond in less than 24 hours with a concrete action plan.
Ready for the next step?
In the diagnosis (3 h, €300, VAT not included) we analyze your product and give you a written plan: technical map, risks, roadmap and estimate. If you then book hours with us, the €300 is deducted from your first invoice.