Welcome
A quick introduction to who I am and what I do.
Hi, I'm Mattéo, a freelance developer turning fuzzy ideas into products that work.
I work on existing products and systems to simplify, modernize, and make them more effective. I also build custom tools when starting from scratch is necessary. My goal is simple: reduce complexity and increase impact.
About me
I've been building things on the internet since I was old enough to break them.
I now work freelance on products that need fixing, modernizing, or building from scratch. My main project is Racines - a SaaS platform for short supply chains that I designed and shipped solo, from architecture to deployment. That's where I test everything I then apply with clients.
What I actually care about in a mission: understanding the system before touching the code. And handing over something the other side can maintain without me.
Experiences
2025
founder · Racines
2026
creator · Open Value Pricing
2023
business developer · Geninc
2022
web developer freelance · Initiative for Science in Europe
2022
business advisor · Seizart
2018
freelance developer · MRBDRS
2020
founder, president · Dev&Prod
Certifications
Mar 2026
AI Fluency for Nonprofits · Anthropic
Mar 2026
AI Fluency Framework & Foundations · Anthropic
Mar 2026
AI Fluency for Educators · Anthropic
May 2025
MOOC - Become an entrepreneur of change · HEC Paris
Feb 2025
BCG - Strategy Consulting · Boston Consulting Group (BCG)
Jan 2025
The strategy of content marketing · University of California, Davis
Jan 2025
ABCs of climate and biodiversity · CNED
Jul 2024
Introduction to Human Psychology · Yale University
Dec 2023
Resilient Leadership · Harvard Business School
Apr 2023
Fundamentals of digital marketing · Google Digital Garage
Latest articles
Some of my recent thoughts on design, development, and the tech industry.
Mattéo worked on two projects for ISE: the website redesign, and the implementation of a survey tool for candidate lists in the European elections across the 27 EU countries. He completed the mission with great efficiency and considerable flexibility. I can only congratulate myself on the quality of our collaboration.
Martin Andler
Professor Emeritus UVSQ · President, Initiative for Science in Europe
From the website to the online store, through all the legal and technical compliance - Mattéo managed the entire launch. Efficient, rigorous, and always able to clearly explain what he does so that we can take over after him.
Jules Taffoirin
Founder · Seizart
Common questions
Answers to questions I often get asked.
An exchange to validate the need. An audit to understand the system. Recommendations, a clear scope, then autonomous execution with regular check-ins. Delivery on the agreed date, simple communication (Slack, WhatsApp, email).
Yes. I modernize, optimize or replace only what's slowing things down. No unnecessary rewrites.
Yes. I manage progress and any additional stakeholders. I just need a contact available to validate key decisions.