Freelancer profile translated to English.
Back to original languageAbout Cyril
Who am I?
Hello, I'm Cyril, a freelance JavaScript Fullstack developer.
I design custom websites, web applications, and platforms with a high level of technical and visual requirement:Next.js App Router, React, Node.js, custom back-offices, databases, Stripe e-commerce, SEO, performance, VPS deployment, and responsive web/mobile.
Formerly a journalist specializing in digital cultures and the internet, and always passionate about machines, networks, and interfaces, I now approach development as true product design work: solid architecture, fluid user experience, modern interfaces, and solutions built to last.
I work on ambitious redesigns as well as complete creations of platforms, SaaS, business tools, or e-commerce sites.
Why hire me?
I master the entire modern development chain around the JavaScript ecosystem: React, Next.js, Node.js, TypeScript, PostgreSQL, Stripe, generative AI, APIs, deployment, and optimization.
My goal is not just to "code a website," but to build reliable, high-performance tools adapted to the real needs of your users and your business.
Responsive (I'll reply within the hour!), involved, and attentive, I prioritize clear communication, serious project follow-up, and direct collaboration with my clients.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Hugues de BourbonFullstack JavaScript DeveloperLUXURY GOODSApril 2026 - June 2026 (2 months)Paris, FranceDesign and development of a custom e-commerce platform for Hugues de Bourbon, an art dealer specializing in rare books, autographs, manuscripts, and unique items.The objective was to create a high-end, high-performance, and manageable website, integrating a catalog of unique pieces, a complete sales funnel, an online appraisal service, and a back-office allowing the client to manage their entire business autonomously.Fullstack Development- Unified fullstack architecture with Next.js App Router.- Development of the entire public site, back-office, APIs, Server Actions, and business logic within a single application.Front-end- Responsive website showcasing unique works and pieces.- Catalog structured by categories and themes.- Detailed item pages with image gallery and optimized navigation.- Simple search and advanced multi-criteria search engine.Custom Back-office- Development of a fully custom business back-office.- Complete management of the catalog, images, storefront, orders, appraisal requests, newsletter subscribers, and email campaigns.- Interface optimized for daily use by a non-technical user.E-commerce Features- Complete checkout process.- Secure payment via Stripe.- Management of reservations, shipping costs, shipments, and item statuses.- Automated transactional emails.Newsletter & CRM- Development of a complete newsletter management module.- Subscriber management, campaign creation, preview, batch sending via Brevo, delivery tracking, and GDPR-compliant unsubscribe.Online Appraisal- Development of a business-specific form for visitors to submit appraisal requests.- Server validation, anti-spam protection, and automated request sending.
- Numéro KFullstack JS Developer + DevOpsLUXURY GOODSJanuary 2026 - March 2026 (2 months)Paris, FranceNuméro K is a personal project combining artisanal product and digital platform. The concept is simple: one bottle of fruit kefir per week, offered to a community of members through an online auction.Description of work doneFor Numéro K, I designed and developed the entire platform, with a simple and robust fullstack architecture.Fullstack ArchitectureTypeScript monorepo with clear separation between the public site and the business API.Stack:- Next.js 15 (App Router) + React 19- Fastify for the API- PostgreSQL + Drizzle ORM- JWT authentication + session cookies- Transactional email via BrevoThe application is organized as a monorepo with two main applications:- apps/web: public site and user interface- apps/api: business logic (auctions, members, notifications)Front-endSleek and editorial interface, designed around the principle of weekly release:- homepage presenting the Numéro K concept- "edition of the week" page with photo, description, current price, and bid history- countdown to auction closing- responsive design optimized for desktop and mobileBidding SystemThe core of the project relies on a simple bidding mechanism:- only one active auction at a time- placing a bid higher than the current price- real-time bid history- automatic closing at the end of the weekThe system ensures the consistency of competing bids through PostgreSQL transactional locks.Member Area & Back-officeThe site includes:- account creation and secure authentication- placing bids by members- email notifications for new edition openingsAn administrator back-office allows for creating and publishing editions, managing members, and sending notifications.DeploymentFullstack application ready to be deployed on a Linux VPS with Node.js, PostgreSQL, and Nginx.
- DOMAINE D'ARNHEIMJ.-F.Fourcade BookstoreE-COMMERCEOctober 2025 - January 2026 (3 months)Paris, FranceFor the J.-F. Fourcade Bookstore, I carried out a complete redesign of the site. The project's objectives were multiple: modernize the interface without altering the bookstore's identity, significantly improve performance and natural referencing, structure a true e-commerce site, and above all, provide the bookseller with complete autonomy in the daily management of the catalog via a custom back-office.Fullstack development with Next.js:> Unified stack: front + back + API + administration with Next.js App Router, no external backend.> Combined use of server-side rendering (SSR), Server Actions, and Route Handlers to ensure performance, security, and SEO.> Maintainable and scalable fullstack architecture, designed for a long-term project.Front-end:> Complete graphic redesign, sleek and elegant, true to the spirit of a rare bookshop.> Responsive design optimized for desktop, tablet, and mobile.> Editorial highlighting of books from the homepage (selections, new arrivals, showcases).> Development of detailed book pages: description, multiple images, authors, year, publisher, price.> Redesigned navigation: fixed menu, persistent footer, carousels, editorial blocks.+ Advanced search & navigation:+ Custom back-office:+ Database & data migration+ E-commerce features (Stripe Element integration)+ SEO, performance & compliance + Deployment & DevOpsThe Bookstore now has a modern, high-performance, and sustainable site, perfectly suited to its specialized bookselling business. The client benefits from complete autonomy over their catalog, a reliable e-commerce tool, and a solid technical foundation for confidently planning future developments (print catalogs, exports, statistics, advanced features).
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Education
- Professional Title of Web and Mobile Web DeveloperO'Clock2022Développer la partie front-end d'une application web ou web mobile en intégrant les recommandations de sécurité : > Maquetter une application. > Réaliser une interface utilisateur web statique et adaptable. > Développer une interface utilisateur web dynamique. Développer la partie back-end d'une application web ou web mobile en intégrant les recommandations de sécurité : > Créer une base de données. > Développer les composants d'accès aux données. > Développer la partie back-end d'une application web ou web mobile.
Certifications
- Professional Title of Web and Mobile Developer (DWMM)MINISTRY OF LABOR, EMPLOYMENT AND INTEGRATION2022