Freelancer profile translated to English.
Back to original languageAbout Cédric
Full-stack developer and tech trainer, I help product teams and SaaS publishers deliver clean, performant, and well-tested code, and upskill on their stacks.
My main stacks
- **Backend**: Ruby on Rails (RNCP certified), Sidekiq, Hotwire, Stimulus, PostgreSQL
- **Frontend**: Next.js, React, TypeScript, Tailwind CSS
- **AI & Automations**: OpenAI / Claude API integrations, AI agents, Make, n8n, Notion, Airtable
- **Quality**: RSpec tests, GitHub Actions CI/CD, accessibility, SEO, performance
My two complementary hats
- **Dev**: Design and development of complete web products, from MVP to industrialization. Recently: Tailwind/Stimulus integration for Kis Digital, Nuxt refactoring for Eden Labs, HappyTasks PWA.
- **Trainer**: Teacher at Le Wagon bootcamp (Ruby on Rails), Lead Instructor for Uncode School (No-Code and AI: Notion, Airtable, Make, n8n). Background: 15 years in journalism, including management positions, hence a real ability to structure, simplify, and deliver on time.
Types of missions
- **MVP from scratch**: complete web product, from backend to UI, in 4 to 8 weeks
- **Refactoring**: taking over a legacy app, stack migration, version upgrades
- **AI in an existing product**: OpenAI / Claude API, conversational agents, Make / n8n
- **Audit & optimization**: performance, accessibility, SEO, technical debt
- **Mentoring & training**: pair programming, code review, junior teams
How I work
- **Upfront scoping**: clarifying needs, constraints, and milestones before the first line of code
- **Short iterations**: regular demos, quick adjustments, continuous delivery
- **Written communication**: polished briefs, reports, and documentation (writer's reflex)
- **Skill transfer**: I document, I train, I leave the team autonomous
Detailed portfolio below. Let's discuss your project.
French
Native or bilingual
English
Fluent
German
Native or bilingual
Can work on-site
Rouen (up to 50km), Paris (up to 40km)
Experience
- KulturkreisRails & Stripe DeveloperCULTURENovember 2025 - Today (8 months)
- Maintenance and evolution of the Ruby on Rails website for the Kulturkreis BDI (German Industry Cultural Association)
- Donation Form + Stripe (Nov-Dec 2025): development of an online donation form with Stripe Checkout integration
- Bug fix for Ars Viva images (Mar-Apr 2026): correction of duplicates and addition of an image deletion button
- Application module (in progress): configurable online application module on the admin side (form builder)
- Uncode SchoolTrainerEDUCATION AND E-LEARNINGJuly 2025 - Today (1 year)Paris, France
- Design, writing, and video production of No-Code & AI modules (Notion, Airtable, Make, n8n, OpenAI / Claude API integrations)
- Facilitation of client case study review live sessions: live decoding, pedagogical debugging, best practice transfer
- Facilitation of public acquisition live sessions: demos, masterclasses, events
- Pedagogical referent for Notion and AI Agents topics
- Kis digitalTailwindCSS IntegratorDIGITAL AND ITJuly 2025 - Today (1 year)Rouen, France
- Pixel-perfect front-end integration on Ruby on Rails applications (Slim + TailwindCSS v4 + Stimulus / Hotwire)
- Work from Figma mockups, rapid iterations based on client feedback, Stimulus controllers for fine-grained interactivity
- Some projects delivered: lab.fr (B2B industrial corporate, CO₂ treatment), yoku.fr (lifestyle / Lyon spa, immersive art direction), otoctone.com (luxury / exceptional property rental)
- Ability to switch between different visual universes while maintaining technical consistency
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Education
- Web Development BootcampLe Wagon2024- Maîtrise de Ruby on Rails, Stimulus et Turbo - Design de produit et création de MVP - Analyse et traduction des besoins métier en solutions techniques
- Professional Master's Degree, JournalismCentre universitaire d'enseignement du journalisme de Strasbourg2009Master professionnel, Journalisme
Certifications
- RNCP Level 6 Application DeveloperLe Wagon2025