You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Raphael LeroyRL

Raphael Leroy

Fullstack Developer & AI Automation Expert

€380/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Raphael

Do you have a web project, an automation to build, or a business process to transform? I'll take care of it from A to Z, with total autonomy.

I develop React/Next.js applications, n8n automation systems connected to third-party APIs, and Claude API integrations for your AI workflows. I deliver quickly, without needing to be handheld.

References: WebGL to React JS migration for a startup (1,000+ concurrent users), AI crypto trading bot in production, e-commerce and click & collect platforms.

Daily Stack: React · Node.js · n8n · Claude API · Cursor · Claude Code. Full remote only.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Kolizeo (Start-up)
    Fullstack Developer
    SPORTS
    August 2025 - December 2025 (4 months)
    Metz, France
    — Sole developer on a full migration from WebGL to React JS — rewrote the entire stack from scratch, front to back — Application serving live sports events with 1,000+ concurrent spectators per match — performance and uptime were critical — Used Claude Code to maintain high velocity on a complex legacy codebase with zero prior context — Delivered autonomously within deadline, with no senior oversight or external support
    React.js Node.js Claude API JavaScript Cursor
  • ANIRIA
    Founder & Lead Developer
    DIGITAL AND IT
    April 2026 - Today (2 months)
    France
    — Founded and operating a dev & AI automation studio — first contracts signed within 2 weeks of launch — Built and shipped an AI-powered quote generation system: multi-step HTML wizard, dynamic PDF output, Claude API + n8n pipeline — end-to-end solo — Active client pipeline: e-commerce platform, click & collect system, Airbnb-style concierge platform — running simultaneously — Self-hosted production infra on Raspberry Pi: n8n, Python HTTP server, systemd services — zero downtime — Door-to-door sales campaigns targeting local artisans across 10+ business verticals
    Node.js n8n AI Automation Claude API
  • Aniria
    AI Engineer
    TECH
    January 2025 - January 2026 (1 year)
    Paris, France
    — Built a crypto sniping bot in Rust with Claude API reasoning loop + real-time X/Twitter sentiment — generated several thousand euros live — Developed ANIRIA Admin MVP: Next.js 15, TypeScript, Supabase, Claude API vision for AI-assisted document processing — Built Instagram content funnel + lead magnet PDF — full funnel from content strategy to automated delivery — Designed reusable artisan website template system, scalable across multiple business verticals
    JavaScript Claude API Node.js React.js Claude Code

Recommendations

Be the first to recommend Raphael

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Computer Science & Engineering
    Programme Grande École
    2026
    Computer Science & Engineering

Categories