I am...
people-focused

Engineer by trade. Human by choice.
I build tools for people who give a damn about the world.

Freelance work
One person, multiple facets

What I actually do

NOÉ app screenshot

NOÉ — Open-source event platform

Main project · 5+ years · 4000+ hours

Five years as architect and lead developer of NOÉ, an event planning and volunteer management platform for associations, festivals and collectives. React, Node.js, MongoDB. 100k+ LOC codebase. I owned every technical role — architecture, dev, dev-ops — over five years, with product and UX always in mind. 60+ events, 13 000 registered participants, growing 30% year-over-year through word of mouth.

Freelance work

Freelance development

Websites, apps, and custom tools. From landing pages to full-stack products, I dig into the need, think through the UX, propose and ship. My experience with NOÉ taught me versatility, and I won't disappear after delivery.

DJ Baby Djules

DJ

From house to hardgroove, to techno to trance, with a delicious pinch of latin grooves, I love mixing genres. if it moves people, I'll play it.

The Honest DJ Library Manager

The Honest DJ Library Manager

Set of tools I built for myself because messy DJ libraries are a nightmare. Then released it for the people. Free, open-source. Early-stage.

Try it
🌍

Volunteer work

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

The human behind the keyboard

Who is Jules?

I'm a fullstack engineer with a Computer Science degree from INSA Rennes and an MSc in Innovation & Entrepreneurship. I've worked for a large renewables player, built logistics tools for an innovative cooperative, and spent the rest of my time on open-source and climate projects.

For five years I've been the main developer behind NOÉ: that means shipping features with near-zero budget, making architectural calls, and keeping real users happy across backend, frontend, and infra. I've built the reflex of figuring things out fast and never waiting to be unblocked.

I code with AI, but I learned to code without it. I use it to go faster and learn more, not to think less. Every line goes through my brain before it ships.

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  ·  Spanish B2  ·  German B2

Formation
🎓

INSA Rennes — Computer Science degree & MSc Innovation & Entrepreneurship

4 years learning IT and 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
🌿

NOÉ — Lead Developer

2020 – today Sole architect and main developer since 2020. Designed and built the full platform: Node.js API, MongoDB data layer, React frontend, Docker-based infra. Key work: schema-less dynamic fields with cross-entity filtering, WebSocket layer for real-time multi-organizer collaboration, CRA→Vite migration on 100k+ LOC, webhook integration into an n8n automation layer. Co-piloting the product roadmap. Currently driving a technical debt reduction plan and a partnership with TiBillet toward the first fully open-source event suite.

🌎

Sabbatical — Latin America

15 monthsTravelled solo across the continent. Kept contributing to NOÉ remotely.

UNIVERS Qantum — Frontend Developer

2023 – 2024 ReactJS / Ruby on Rails interfaces for Qantum, a renewables software platform. Built React/Vite micro-frontends embedded in a legacy Rails monolith as part of a broader migration toward micro-services. Co-implemented a design system on top of Material UI from Figma specs. Led the enterprise-wide rollout of Weblate as a unified translation management system. 6-person Scrum team, daily ceremonies.

🚲

Urbike — Full-stack Developer

2020 – 2022Innovative logistics cooperative in Brussels. Worked on Pédalo, a logistics management app for cargo-bikes. Technical contact between Urbike (Brussels) and OLVO (Paris), bridging two cooperatives on a shared codebase and roadmap during COVID. Built features across the full parcel lifecycle. Ruby on Rails, Redis, TypeScript. Continued as freelance technical partner after the internship.

Technology

My stack

Backend & data
Node.js MongoDB Ruby on Rails SQL
Frontend
React TypeScript Vite Redux/Zustand Electron
DevOps
Docker/Compose Traefik Linux
Tools
Claude Code Cursor/JetBrains N8N
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.