Hi, I'm
Adeline LefebvreFreelance fullstack web developer. I build web products that last, from custom sites to AI apps.
From idea to production, I turn a business need into a reliable, high-performing product. A dual fullstack and CMS skill set, a product background (Station F), and products running in production across 6 countries.
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Services
My freelance web development services
Three ways to work together, from build to long-term care.
AI apps & integrations
Fullstack Next.js apps with AI built in: extraction pipelines, dashboards, automations.
- Next.js / TypeScript
- Claude API, Mistral, OpenAI
- Dashboards & data pipelines
- Stripe payments, auth
Custom sites & CMS
Websites that go beyond templates: custom development, headless, multilingual.
- Custom WordPress / Elementor Pro
- Craft CMS, Prismic (headless)
- Multilingual sites & technical SEO
- API integrations
Maintenance & evolution
A long-term partnership: I keep your site alive and evolving, reliably.
- WordPress / Craft / Next.js upkeep
- New features & optimizations
- Performance & SEO
- Direct support, clear communication
Work
Featured projects
Rootyne, AI health platform
Help anyone understand their blood test and adjust their diet. I built the platform from scratch: AI extraction pipeline (Claude + Mistral) with an anonymization layer, a biologist review dashboard, and encrypted HDS-compliant infrastructure.
Desert Leaves, environmental NGO
Rally donations and volunteers to reforest arid land. A complete platform built from scratch: Next.js + headless Prismic CMS, Stripe donations (one-time & recurring), multilingual SEO.
LIME Search, finance recruitment
Attract top finance talent, and let the client edit the site without a developer. Multilingual recruitment platform in Craft CMS: custom Twig/PHP components, technical SEO, ongoing maintenance.
Bulbus, educational mobile app
Revise herbalism anywhere and pass the exams. Cross-platform Flutter app: 150+ plants, timed mock exams, in-app purchases. Live on iOS & Android with 37 paying users.
SDS Lingo, multilingual website
Get a translation quote from a single form, in three languages. Next.js site (EN/FR/CS): full i18n, a quote form with file upload, multilingual SEO (hreflang), optimized Core Web Vitals.
Club Fifty Five, creative agency
Give a talent agency a premium showcase, delivered white-label. Custom widgets (animated marquee), Theme Builder, advanced forms, responsive across 5 breakpoints.
Other experiments
Pepstery, augmented reality game
Marker-based AR game built during a tech residency: 3D character generation, real-time interactions (Pusher), non-linear storytelling (A-Frame, MindAR).
Before freelancing: Software Engineer at Cubyn (80+ microservices, Kubernetes/GCP) and Klox (React/Node SaaS platform).
Background
About
Off-screen, I'm training in herbalism (that's where my app Bulbus came from) and constantly tinkering with new AI tools. I like building things that mean something.
Kind words
What people say
“I've seen Adeline's work and I recommend her without hesitation. She's a serious, autonomous developer with a great technical vision. You can trust her to deliver your SaaS or web projects!”
Romain Quellec
CTO, former manager of Adeline
“Her motivation and her commitment were greatly appreciated by our team, as were her responsiveness and her positive attitude. Adeline adapts easily to many situations. I highly recommend her project-management skills.”
Manon Duhem
CSR Manager, Deloitte Luxembourg
“Amazing work and I would like to use this moment to express how happy and grateful we are to have you on board. We really can't do this without you and these tasks, how small sometimes they seem, are soooo important to solve.”
Rosa
LIME Search
Contact
Let's work together
Available for one-off missions as well as long-term maintenance partnerships. An app, a custom website, an AI integration, or picking up an existing project? Let's talk.