Freelancer profile translated to English.

Description

Next.js | React | TypeScript Fullstack Developer – Web Applications & SaaS Platforms

Looking for a developer to build a modern, fast, and maintainable web application? I help individuals, SMEs, and startups design and develop fullstack web projects from idea to production.

My approach:understand your needs before writing a single line of code, deliver something that truly works, and remain available after delivery.

I handle the entire cycle: design, front-end and back-end development, database, deployment, and SEO optimization.

Projects completed:

*Le Vestiaire Foot:Next.js / PostgreSQL / Supabase fullstack SaaS platform. Catalog of +7,000 jerseys, user collection management, gamification system, wishlist sharing, and advanced SEO. In production.

*Horizon (globehorizon.fr):Next.js / Supabase travel blog with article management, itineraries, newsletter, and Google optimization. In production.

*Le MouLouis:Showcase website for a tourist gite with Google Analytics integration and natural referencing.

*YESSS ÉLECTRIQUE:3 years of application support and development on an internal accounting ERP, incident management (Odoo), SQL diagnostics.

What I deliver:responsive and pixel-perfect React interfaces, Next.js SSR/SSG architecture, REST APIs, PostgreSQL database with Prisma, authentication, Vercel deployment, SEO and performance optimization.

Stack: Next.js, React, TypeScript, JavaScript, Node.js, PostgreSQL, Prisma, Supabase, TailwindCSS, SQL, Git, Vercel.

Want to discuss? Tell me in a few words what you are looking to build.

Industry field of expertise

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Can work on-site

Lyon (up to 50km)

Globe Horizon
Freelance Fullstack Developer
TRAVEL AND TOURISM
January 2026 - April 2026 (3 months)
→ Project context:

Design and development of a bilingual (FR/EN) travel blog/magazine for a client who wanted to share destination guides, detailed itineraries, and culinary recommendations, with a back-office allowing her to manage her content independently.

→ Achievements:
Complete full-stack architecture with Next.js 16 App Router, covering 5 content types (country guides, city guides, itineraries, food corner, Out Of Office), a publication workflow (draft/published/archived), and a role-secured admin back-office, ensuring a fluid and scalable editorial experience.
Advanced internationalization system with next-intl (FR/EN), based on a multilingual database schema with dedicated translation tables (countries, cities, articles, categories, tags) and localized URLs by slug, enabling optimal SEO indexing in each language.
Interactive world map (SVG/GeoJSON) allowing navigation by continent and country, with dynamic zoom and display of available destinations, offering readers an intuitive geographical exploration of the content.
Geolocated itinerary engine with day-by-day planning, ordered steps with GPS coordinates, and multi-map management per article, coupled with a map visualization of routes to guide travelers.
Complete authentication via better-auth (email/password + Google OAuth), with secure session management, role-based access control (USER/ADMIN), and newsletter with language preferences.

→ Technical Stack:
Next.js 16 (App Router), React 19, TypeScript, Tailwind CSS v4, Shadcn UI, PostgreSQL, Prisma ORM, better-auth, next-intl, Supabase Storage, Tiptap
Next.js React.js SEO SQL
Le Vestiaire Foot
Fullstack Developer (Next.js)
SPORTS
July 2025 - February 2026 (7 months)
Lyon, France
→ Project Objective:
Develop a full-stack web application allowing football jersey collectors to organize their collection, manage their wishlist, rate jerseys, and interact with other collectors through a social system.

→ Achievements:
Design and development of a complete Next.js 15 App Router application, with collection management (add, edit, custom photos), rating system, and leaderboards, offering a fluid experience on desktop and mobile.
Implementation of a robust authentication system via Better Auth (email/password + Google OAuth) with server-side session management and protection of all sensitive routes.
Development of a complete social system (friend requests, public profiles, leaderboard) with a real-time user search engine and relationship status management.
Setup of a multi-layered security infrastructure: 4-level rate limiting via Upstash Redis, server-side upload magic-byte validation, and HTTP security headers.
Integration of Cloudflare R2 for storing jersey images (migration from Supabase Storage), with management of multiple buckets based on content type.

→ Technical Stack:
Next.js 15 (App Router), Strict TypeScript, PostgreSQL, Prisma ORM, Better Auth, Supabase Storage, Cloudflare R2, Upstash Redis, TanStack Query, React Hook Form, Zod, TailwindCSS 4, Radix UI, Vercel
Next.js SQL Vercel React.js JavaScript
YESSS ELECTRIQUE,
Programmer Analyst / Work-Study
July 2021 - October 2024 (3 years and 3 months)
Francheville, France
• Contribution to the development of internal accounting software, in collaboration with accounting teams.
• Participation in the design, implementation, and improvement of software features.
• Incident and request management via a ticketing tool (Odoo Assistance)
SQL

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Expert in Computer Science and Information Systems, Computer Science
EPSI - The IT Engineering School
2024
Expert en Informatique et Système d'information , Informatique
Bachelor in Application Design and Development
EPSI - The IT Engineering School
2022
Bachelor Concepteur Développeur D'application

Nathan R.

Fullstack Developer Next.js & React | Saas

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