Frequently asked questions

An experienced technical leader who joins your company 2 to 5 days a week, with no hiring process and no payroll overhead. They own architecture, stack decisions, development and recruiting, at a fraction of the cost of a full-time CTO.

Between €4,000 and €8,000 per month depending on involvement (2 to 5 days per week). Compare that to the €120,000-180,000 yearly cost of a full-time CTO (salary, taxes, equity), with only a 3-month commitment and zero hiring risk.

Below 8 to 10 developers, a full-time CTO is rarely 100% busy with actual technical leadership. A fractional CTO covers architecture, structural decisions and technical management, and you switch to a full-time hire when team size justifies it.

Yes, I work fully remote for clients in France and internationally: weekly video check-ins, written reporting, asynchronous code reviews. Based in Paris, I can travel for key moments (kick-off, board meetings, hiring rounds).

A full audit of what exists (code, infrastructure, team, processes), quick wins shipped within the first two weeks, then a technical roadmap aligned with your business goals, with reporting you can share with investors.

I code. That is the core of the offer: a hands-on CTO who ships the architecture AND the features, augmented by AI to produce the output of a team. Advice without execution is exactly what this format avoids.

I structure the team: code standards, code reviews, CI/CD, mentoring and hiring. At TF1, I am Tech Lead of a 4-developer squad within a multi-squad organization; that same playbook applies directly to your existing team.

3 months, renewable, to guarantee technical continuity, with a one-month notice period and no penalty. If the format no longer fits, you stop, with clean documentation and handover.

The first mobile engineer of a company: the person who picks the stack, designs the architecture, builds the first version of the app and sets the standards (tests, CI/CD, releases) every future hire will inherit. A founding role, too risky for a junior profile.

React Native in 90% of cases: one codebase for iOS and Android, time-to-market cut in half and a much larger hiring pool. I build native Kotlin/Swift modules when a feature requires it, as done at PMU and TF1.

A well-scoped mobile MVP costs €7,000 to €15,000 as a fixed-price project. For ongoing support (first mobile engineer), budget €4,000 to €8,000 per month depending on pace. The online calculator gives you an estimate in 2 minutes.

Expect 4 to 8 weeks from kick-off to the first public version: 2 to 4 weeks building the MVP, one week of polish and TestFlight, then Apple review (1 to 3 days). Developer accounts can be created on day one.

Yes, that is my default mode, including with TF1 and PMU: asynchronous communication, weekly video demos, code visible continuously. A 3-4 hour timezone difference is not a problem.

Yes. Audit of the code, crashes and release pipeline, then consolidation: exactly the work done at Zeturf on a production betting app. A free 30-minute audit gives you an honest picture of your app's real state.

Here, always under €10,000, with a fixed price announced before kick-off. An agency bills the same scope €25,000 to €60,000 over 2 to 4 months; a senior engineer augmented by AI ships it in 2 weeks, with zero coordination overhead.

A complete web application (authentication, dashboard, payments, API), a React Native mobile app published to TestFlight, a conversion-optimized site or an MCP server connected to your tools. The exact scope is agreed before the quote, and it is binding.

A deliberately strict v1 scope, a proven stack (Next.js, React Native, Supabase, Vercel, AWS) and an AI-augmented process (Claude Code, custom agents, MCP). You follow progress continuously on a staging link, no 2-week black box.

Yes, 100%. The source code lives in your own GitHub repository from day one, with documentation and hosting access in your name. No dependency: any developer can take over the project tomorrow.

One week of post-delivery support is included in the fixed price. After that, three options: you take over (the code is documented), one-off fixed-price iterations, or ongoing support as a fractional CTO if the product takes off.

Yes, fully remote, for clients anywhere in France and internationally. Video kick-off, progress visible continuously on a staging link, final demo over video. Based in Paris if meeting in person is useful.

Yes, full remote by default, for clients in France and internationally. Based in Paris, I travel occasionally for key moments. The rituals: video kick-off, progress visible continuously, weekly demos.

A free 30-minute discovery call: you explain the need, I tell you honestly whether I am the right profile and in which format (fixed price, one-off project, fractional). Written proposal within 48h, start possible the following week.

A 2-week fixed-price project usually starts within 1 to 2 weeks. A fractional engagement (2 to 5 days per week) is set up within 2 to 4 weeks depending on current workload. The booking calendar shows real availability.

Fixed price announced before kick-off for scoped projects; monthly for fractional work. Standard French invoicing with VAT, 30% deposit on fixed-price projects, balance on delivery.