I am...
people-focused

Engineer by trade. Human by choice.
I build tools for people who give a damn about the world — and I try to be one too.

Freelance work
One person, multiple facets

What I actually do

NOÉ app screenshot

NOÉ — Open-source event platform

Main project · 4+ years · 4000+ hours

Lead developer of NOÉ, a platform built for associations, festivals and collectives to manage events, volunteers, schedules and registrations. React, Node.js, MongoDB. From architecture to shipping to user support — built and maintained over four years, used by 60+ events across France and beyond.

Freelance work

Freelance development

Websites, apps, and custom tools for clients who care about quality. From landing pages to full-stack products — I propose and ship. My experience with NOÉ taught me versatility, and I won't disappear after delivery.

DJ Baby Djules

DJ — 𝔹𝕒𝕓𝕪 𝔻𝕁𝕦𝕝𝕖𝕤

From house to hard groove, to techno to trance, with a delicious pinch of latin grooves — if it moves people, I'll play it. Why "Baby"? To remind me to never stop being curious and always keep improving.

The Honest DJ Library Manager

The Honest DJ Library Manager

A tool I built for myself because messy DJ libraries are a nightmare. Then released it for the people. Free, open-source. Still a draft project.

Try it
🌍

Activist

Volunteering at Alternatiba (climate justice), the Virtual Assembly (digital tools for commons), and any collective trying to do good in the world.

The human behind the keyboard

Who is Jules?

I'm a fullstack engineer with a CS degree from INSA Rennes and an MSc in Innovation & Entrepreneurship. I've shipped software for a large energy group, built logistics tools for an innovative cooperative in Brussels, and spent the rest of my time on open-source and climate tech — with a 15-month detour through Latin America somewhere in the middle.

For four years I've been the main developer behind NOÉ — an open-source event platform used by festivals and associations across France. That means shipping features with near-zero budget, making architectural calls solo, and keeping real users happy — not a sandbox project. I've learned the best technical decisions aren't always the most elegant; they're the ones the team can maintain, users can understand, and the project can survive.

I've always believed the best engineers are also curious humans — people who have done things outside the IDE. This shows up in the software I build: readable, empathetic, designed for real use.

I care about where technology goes and who it serves. If you're building something for the climate, for communities, or for the open web — let's talk.

🗣 French native  ·  English C1  ·  German B2  ·  Spanish B2

Formation
🎓
INSA Rennes — MSc Innovation & Entrepreneurship Computer Science + double degree. 14 months building a startup from idea to investor pitch.
🇸🇪
Blekinge Institute of Technology, Sweden Semester abroad — top 5 worldwide for Computer Science, pioneer in sustainable development.
Experiences
🌎
Sabbatical — Latin America 15 months Travelled solo across the continent. Kept contributing to NOÉ remotely.
🌿
NOÉ — Lead Developer 2020–today Main developer of the platform. React, Node.js, MongoDB. Scarce resources, real users.

UNIVERS Qantum — Frontend Developer

2023–2024 ReactJS / Ruby on Rails interfaces for Qantum, a renewables software platform.

🚲
Urbike — Full-stack Developer 2020–2022 Innovative logistics cooperative in Brussels. Built Pédalo, a logistics management app. Rails, Redis, JS, Python.
🏆
Orange-Nokia Challenge finalist + winner of the 48 Hours of Innovation in Rennes. LUMOS: connected, modular public lighting.
🇻🇳
DAGOBA — Hồ Chí Minh City, Vietnam International internship. Ruby on Rails, web scraping, database improvements.
🎭
Un Des Sens Festival — Artistic Director 30 volunteers, 25k€ budget. Drama, music, dance, magic, free activities.
Technology

My stack

Frontend — where I live
React TypeScript JavaScript HTML / CSS
Backend & data
Node.js MongoDB / Mongoose Ruby on Rails MySQL Python
Tools & workflow
GitLab / Git Docker / Compose N8N Linux
Also in my toolbox
InDesign Premiere Pro Photoshop LaTeX Java
Things that shaped me

A short shelf

Let's talk

Say hi.

Whether it's a project, a collaboration, a question about NOÉ, or just "your DJ name is a war crime" — I'm around.