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Available for freelance

Hi, I'm

Adeline LefebvreWeb products that last, from custom sites to AI apps.

Tell me about your idea. My job is everything that stands between it and going live.

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Work

Featured projects

Five recent projects, and what they changed for the client.

Rootyne

01AI health platform

Rootyne

Blood test results people can finally understand

A platform built from scratch: people upload their blood test, an AI pipeline extracts the values, and a clinical biologist reviews every report before it reaches them.

Full product
from blood test upload to online payment, designed and shipped solo
Protected data
anonymized before any AI processing, encrypted, on HDS-compliant health data hosting
AI under control
a clinical biologist reviews and validates every report before it is sent

Founder and developer: product, development and production.

Next.js · Claude API · Mistral · Firebase · Stripe

View site
IN CULTURE

02Cultural collaborations agency

IN CULTURE

A site true to the brand, updated by the agency itself

Four pages and 23 case pages, developed solo from the validated design to launch: a cursor-driven infinite carousel, audio that keeps playing across pages, and a CMS for every text, image and case.

Full autonomy
the team edits every text, image and case itself, live within seconds
Made to measure
brand-specific interactions built from the validated design, with no theme or template
Live feedback
several rounds of client feedback, applied live with the agency's founder

Development: Adeline Lefebvre. Design and project lead: Code Create.

Next.js · TypeScript · Tailwind CSS · Sanity · Vercel

A site like this one, that you update yourself (Next.js + headless CMS)View site
Desert Leaves

03Environmental NGO

Desert Leaves

A donation and volunteering platform in four languages

A complete platform built from scratch: Next.js, headless Prismic CMS, one-time and recurring Stripe donations. Content is translated automatically the minute it is published, and the team corrects it in a simple Google Sheet.

4 languages
Spanish, English, French and Dutch, translated one to two minutes after each publication
€0
per month for translation: no subscription, no API key, no server
< 1 minute
for a correction made by the team in the spreadsheet to appear on the site

Development of the platform from scratch, then its internationalization.

Next.js · Prismic · Stripe · next-intl · Google Apps Script

A site like this one, that you update yourself (Next.js + headless CMS)View site
LIME Search
Share card generated for a vacancy, shown in a chat preview

Screen recorded with fictional data.

04Finance recruitment agency

LIME Search

Confidential interim vacancies, shared with a single link

On the Craft CMS site I maintain, interim assignments circulate by direct link in a private WhatsApp group. They never appear in lists, in the sitemap or in search results.

1 link
per vacancy, short and shareable, with a branded preview card generated automatically
0 re-entry
applications and CVs land directly in OTYS, the system the recruitment team already uses
GDPR
CVs held on the server are deleted automatically after 7 days

Custom Craft plugin work on the OTYS integration, build from the agency's mockup, ongoing maintenance of the site.

Craft CMS · PHP · Twig · OTYS API · GD

View site
Velec Systems

05Food industry manufacturer

Velec Systems

An industrial site that is faster, mobile-ready and properly indexed

Performance optimization of an Elementor Pro and WPML build, responsive adaptation, technical SEO fixes across a WordPress multisite, then post-launch stabilization with the client's SEO agency.

89
PageSpeed score on desktop, on a very dense home page
47 pages
adapted for tablet and mobile
384 URLs
discovered by Google once the sitemaps were fixed, up from 261

Successive fixed-price missions since August 2026, with a written report at every step.

WordPress · Elementor Pro · WPML · WP Rocket · WP-CLI

View site

More projects

Agency builds, a large migration, a mobile app and volunteer work.

Mobile app, my own product

Bulbus

Mobile app, my own product

Bulbus

Revise herbalism anywhere and pass the plant recognition exams.

  • 150+ plants, timed mock exams, in-app purchases
  • Live on iOS and Android, 37 paying users

Flutter · Node.js · MongoDB

View site

Biotech one-pager

Revier Therapeutics

Biotech one-pager

Revier Therapeutics

A precise, scientific showcase designed to attract funding and partnerships, built pixel-perfect from the agency's mockup.

  • Two-state header that inverts over the hero, then pins on scroll
  • Clinical pipeline chart, scroll progress indicator and program popups, custom-coded

Design and project lead: Code Create.

WordPress · Elementor Pro · JavaScript · CSS

View site

Creative talent agency

Club Fifty Five

Creative talent agency

Club Fifty Five

A premium showcase for a talent agency, built with WordPress and Elementor Pro.

  • Custom widgets, including an animated marquee
  • Theme Builder, advanced forms, responsive across 5 breakpoints

Design and project lead: Code Create.

WordPress · Elementor Pro · JavaScript · CSS

View site

Medical clinic, migration in progress

Lipology Clinic

Medical clinic, migration in progress

Lipology Clinic

Move a 400-page clinic site to a new mobile-first design without losing content.

  • Around 125 treatment pages migrated so far, template by template
  • FAQ structured data, anchor navigation, metadata and medical compliance fixes

Design and project lead: Code Create.

WordPress · Elementor Pro · Rank Math · Schema.org

View site

Climate nonprofit, volunteer work

The Shifters

Climate nonprofit, volunteer work

The Shifters

Volunteer developer on the internal tools team of a 20,000-member climate association.

  • Fixed a login redirect that was losing deep links, covered by 11 tests
  • Features and fixes across several services, with code review on every merge request

React · TypeScript · Fastify · PostgreSQL

View site
Let's talk about your project

Services

Three ways to work together

My freelance web development services, from a first product to long-term care.

  1. Launch a product or an AI app

    For startups and anyone with a product to launch.

    You have an idea or a business need. I design and build the complete application, all the way to production.

    • A custom application, from the interface to the database
    • AI where it is useful: document extraction, automations, assistants
    • Online payment, user accounts and an admin area
    Example: Rootyne

  2. Build or redesign a custom site

    For studios, agencies, firms and brands that want a site in their own image, without depending on a developer.

    A site that looks like you, and that your team updates without a developer.

    • A faithful build of your design, or your agency's
    • Several languages and careful technical SEO
    • Connected to your tools: CRM, recruitment, payment, newsletter
    A site that looks like you, that you update yourself (Next.js + headless CMS)
    Example: IN CULTURE

  3. Improve an existing site

    For companies with an existing site and no developer on the team.

    I take your site as it is and keep it moving forward over time.

    • New features, delivered in small steps
    • Performance, mobile adaptation and technical SEO
    • One point of contact and a written report at every step
    Example: Velec Systems
A dedicated offer for nonprofits & local shops

Method

How it works

  1. We talk

    A 15-minute call or a few emails, whichever you prefer, with no commitment. You describe your need, I tell you what is feasible, and what is not.

  2. A clear quote

    A written scope and a price announced in advance, step by step. You know what you pay for and what you get.

  3. Delivery in steps

    You see the project move forward, with a written report at every step. After launch, I stay available to keep it evolving.

Kind words

What people say

“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.”
R

Rosa

LIME Search

“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!”
RQ

Romain Quellec

CTO, former manager

“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.”
MD

Manon Duhem

CSR Manager, Deloitte Luxembourg

Background

About

My path started in product and entrepreneurship (Station F, business school). I kept that founder's mindset: I start from the business need, not the tech.
Today I'm a fullstack developer. I've shipped products to production, used by real people in France, Spain, the Netherlands and Germany: from Rootyne (a health platform powered by Claude + Mistral) to Bulbus (a mobile app with 37 paying users).
My dual skill set covers fullstack (Next.js, React, Node) and CMS (custom WordPress, Craft, headless), so I adapt to very different projects, from SaaS built from scratch to long-term maintenance.
I believe in lasting partnerships: clear communication, reliable delivery, and real care for business impact. Available for new collaborations across Europe.

Before freelancing, I was a software engineer at Cubyn, an e-commerce logistics scale-up, and at Klox, a SaaS platform.

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.

Contact

Let's work together

Available for freelance

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.

Book a 15-min calladeline.lefe@gmail.com

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