A CTO (Chief Technology Officer) is the person who makes strategic technical decisions for your business. They avoid costly mistakes, coordinate the right experts, and ensure your technology supports your growth.

Why have a CTO from the start?

A CTO from day one prevents you from rebuilding your project 6 months after launch. They secure your budget, challenge quotes, choose the right technologies, and supervise teams to ensure everything is done correctly the first time.

How much does a fractional CTO cost?

Missions start at 1 day per week (€800-900/day, paid upfront). Every project is different, and we adapt our support to your actual needs and budget.

What is the commitment duration?

Short, scoped missions, typically 1-6 months, with the possibility of extension based on your needs. No long-term contracts imposed; we work in decision cycles.

Will my information remain confidential?

Absolutely. All missions are covered by an NDA (non-disclosure agreement). Your technical, strategic, and financial data remains strictly private.

What does the qualification call include?

A 20-minute call, free and no commitment, to assess the real level of technical risk, challenge quotes, detect budget traps and determine whether a Decision Diagnostic is relevant. No audit, no deliverables — just qualification.

You are 1–2 technical decisions away from a costly correction.

This page is to decide whether Mahthildis should intervene — or whether your trajectory needs correction before investing further.

Understand the risks →

In 20 minutes, I can tell you if it's relevant — or if you don't need us.

How cost is determined

Le coût d'intervention dépend :

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the level of risk to secure (irreversible decisions, dependencies, hidden costs)
•
your role in the decision (founder, investor, organization)
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the real cost of an error (delays, correction, loss of optionality)

We intervene only when not acting appears riskier than our intervention.

What you get

Secure technical decisions before committing budget (architecture, vendors, technologies)
Neutral oversight of your agencies and freelancers (you pay execution to the vendor, we protect budget and acceptance criteria)
A single senior contact responsible for all technical decisions

Prepaid engagements. No free work. Equity only with traction and funding.

AI doesn't replace technical leadership

More and more business leaders try to compensate for the lack of technical oversight with AI tools. These tools can help, but without understanding the foundations, they create an illusion of control. You think you're moving fast — you're often building more fragile. Mahthildis intervenes to restore clarity, structure and human decisions where AI is not enough.

Experts available, under Mahthildis oversight

If a topic becomes critical, I activate the necessary expertise under my oversight: security (avoid incident), cloud & costs (avoid bill explosion), data (reliability), AI (controlled usage). You keep one contact and one accountability.

Qualification call (20 min)

Free, no commitment. During this call, we:

Qualify the real risk level
Challenge your quotes and detect budget traps
Determine if a Decision Diagnostic is needed

Objective: decide whether to launch a Decision Diagnostic. No audit, no deliverables.

No commitment. If we're not the right partner, we'll tell you.

Decision Diagnostic (10–15 days) — Paid mission

Short and scoped mission to decide: Continue / Correct / Pause.

We gain nothing from making you develop more. Only from helping you decide better.

You leave with 4 decision deliverables

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Decision memo (5–10 pages): financial risks + 30/60/90-day plan, no jargon.
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Scorecard (1 page): traction / quality / velocity / vendor reliability (green/orange/red).
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Roadmap (3 milestones): binary criteria, end of ambiguity.
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Verdict (90 min): Continue / Correct / Pause.

Engagement formats

Depending on the risk level and your context, we intervene in five ways:

Decision Diagnostic (10–15 days)

Short and scoped mission to decide: Continue / Correct / Pause. You leave with the 4 decision deliverables detailed above (Memo, Scorecard, Roadmap, Verdict).

Fractional CTO (part-time)

Regular presence (rhythm defined after diagnostic) to steer your technical decisions, supervise vendors or internal team, and maintain trajectory. A senior CTO without hiring.

Emergency control takeover

Fast intervention when a project derails: accumulated delays, technical instability, technical contractual lock-in. Goal: stabilize quickly and restore an executable plan.

Vendor Oversight

Select the right agency or freelancers, lock scope & acceptance criteria, and keep delivery on track without budget drift. Execution is paid to vendors. Mahthildis protects decisions, quality, and budget.

Punctual advisory (specific cases)

Packaged decision sessions (e.g., validate a cloud choice, arbitrate an architecture, challenge a quote), only after risk qualification. No implicit technical execution.

Terms

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Prepayment. No free work.
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Scope and duration defined before intervention.
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Equity only with traction + funding in place.

Send a message

Decide now

20 minutes can save you months of delay and tens of thousands of euros misinvested.

Limited to 3 new clients per month.

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