How long to develop an MVP?

A functional MVP can be delivered in 4-8 weeks depending on project complexity. I work in short sprints to deliver value quickly.

What is a fractional CTO?

A fractional CTO brings you senior technical director expertise without full-time costs. I work 1-4 days per week for technical direction, recruiting, and team mentoring.

What technologies do you use?

My main stack: Node.js, TypeScript, NestJS for backend. React, Next.js for frontend. PostgreSQL, MongoDB for databases. Deployment on AWS, GCP, or Vercel.

>JD

{ }//< />=>[ ]

Jérôme DesmaresI build your AI products

10 years of fullstack dev behind me. Since 2024, I build AI products: agents, LLM integrations, automations.

Let's discuss your AI project See my background

Free 30-min intro call, no commitment

10+ yrs building

10+ products shipped

11 devs managed

LLMs & agents in prod

They trusted me

AI Engineering Services

I build AI products that run in prod, not demos.

AI product from scratch

Got an AI product idea? I build the whole thing: agents, LLM, interface, infra. A real product, in prod, in a few weeks.

AI agentsLLM integrationsUI + API + Infra

AI integration in your product

Your product already exists and you want to add AI. I plug LLMs or agents into your existing stack. No need to rewrite anything.

LLM integrationAgents on your dataAPIs & microservices

Fractional AI CTO

Technical leadership with an AI focus. I help you pick the right strategy, hire the right people and upskill your team. 1-4 days per week.

AI product strategyHiring & trainingArchitecture & code reviews

AI Audit & Strategy

Not sure where to start? I audit your product, find where AI actually helps, and give you a clear plan. What works fast, what takes longer, and what's not worth it.

Use case auditPrioritized action planEstimated ROI per feature

Got an AI project?

Let's talk

Tech stack

Node.jsTypeScriptNestJSReactPostgreSQLDocker

Why trust me

10 years building tech products. Now I put that experience into AI to create things that didn't exist 2 years ago.

2026-Now

AI Engineer & Builder

I build AI products from start to finish. Agents, LLM integrations, automations. From prototype to prod.

2022-2025

Engineering Manager

Recruited and managed up to 11 developers. Architecture, process, quality, all at scale.

2020-2022

Tech Lead

Complex products delivered on time with teams of 3-6 devs. I know how to ship.

2018-2020

Senior Fullstack Developer

Built critical APIs (payments, auth, SaaS billing) processing millions of euros. That's what I build AI on top of today.

2015-2018

E-commerce Entrepreneur

Built and scaled an online store to €200k revenue. I understand business, not just tech.

Education

School 42 Paris

Digital Technologies Architect (Master's level)

Master's Degree

International Business Europe-Asia

Frequently asked questions

Let's talk about your AI project

Agents, LLM integration, automations? I respond within 24h with an initial analysis of your needs.

Free 30-min intro call

We talk about your project, no commitment

Let's discuss your project

Nice,France// 100% Remote