Freelancer profile translated to English.
Back to original languageAbout Raphaël
Hello, I am Raphael PICARD, afull stack web developerspecializing inReact.js**, **Node.js**, and **AIwith over 8 years of experience.
I help you create modern, high-performance, and AI-enhanced web applications (RAG, AI Agent, and ChatBot).
Front-End Web Development Expertise React.js:
→ Fluid, interactive, and modern interfaces with Next.js 15, React.js, and TypeScript
→ SEO and accessibility optimized SSR/SSG web development
-> React.js developer for high-performance web applications
-> Responsive integration with TailwindCSS
Back-End Web Development Expertise Node.js & Python
→ Robust and secure REST APIs with Node.js, Express, Fastify, FastAPI
→ High-performance databases with PostgreSQL, MySQL, MongoDB
→ Advanced automation with Python and n8n
RAG, AI Agent & ChatBot Development Expertise
→ Integration of LLMs like ChatGPT, Gemini, Claude...
→ Design of contextual chatbots and AI assistants with LangGraph, LangChain, or CrewAI
→ Creation of custom RAG and AI Agents to query your internal data in natural language with LangGraph or CrewAI and LangChain.
→ Business automation: info extraction, dynamic FAQs, summaries... with n8n or Python script
Technical Stack
Frontend: Next.js, React.js, TypeScript, TailwindCSS
Backend: Node.js, Python, Nest, FastAPI
DB: PostgreSQL, MySQL, MongoDb, Qdrant
AI: LangGraph, CrewAI, LangChain, MCP, n8n
DevOps: Docker, CI/CD
Why work together?
Over 8 years of full-stack experience, mastery of front-end React.js & Next.js and back-end Node.js or Python. Concrete AI expertise for your business objectives.
Maintainable and scalable code.
Ready to boost your project withReact.jsand **AI**?
Contact me today.
French
Native or bilingual
English
Conversational
Can work on-site
Lyon 1er Arrondissement (up to 50km), Paris (up to 50km), Marseille (up to 50km), Montpellier (up to 50km)
Experience
- Raphaël PICARD EIFull-Stack & AI Developer - Web Applications + Automation & AISOFTWARE PUBLISHINGOctober 2022 - Today (3 years and 8 months)Marchampt, FranceDevelopment of modernweb applicationsand customAI toolsto automate business tasks, improve productivity, and deliver high-performance interfaces.🎯 ObjectiveCreateintelligent**, **scalable**, and **SEO-friendlysolutions by combiningweb expertiseand **AI technologies**.🛠️ StackReact, Next.js 15, TypeScript, Tailwind, Prisma, PostgreSQL, Sanity CMSPython, LangChain, LangGraph, CrewAI, RAG, OpenAI API, FastAPI, n8nCI/CD, Zod, Jest, Clean Architecture, Puppeteer, Vercel🚀 Key Achievements→Contextual AI Agents**: orchestrated with **LangGraph& **CrewAI**, capable of collaborating, remembering, and using tools (web, code, summarization).→ **MCP (Model Context Protocol)**: Python protocol to give LLMs structured and up-to-date access to technical documentation.→ CustomAI Chatbot**: based on **RAG+embeddingsto dynamically query my skills/projects.→ Automations vian8n**: parsing, enrichment, intelligent **APIcalls (Slack, Notion, Airtable).→E-commerce site**: **Next.js+Prisma**, Server/Client components, **Frameranimations, SEO >90.→ LinkedIn Scraper: extraction of targeted content with anti-bot bypass.📊Results & Impact• Deployment of modular AI agents in production• Reduction of processing time by up to -70% on automated workflows• Delivery of high-performance and accessible web interfaces
- Royal CaninSenior Front-End Developer (React.js/Typescript)AGRICULTUREDecember 2022 - March 2025 (2 years and 3 months)Paris, FranceRedesignandmodernizationof a high-traffic internationale-commerceplatform (B2B& **B2C**, +100 countries).🎯 ObjectiveImprove theperformance**, **maintainability**, and UX of the **React.jsplatform, by applying modern front-end quality standards.🛠️ Stack & MethodologyReact.js, TypeScript, Azure DevOps, Jest, Testing Library, Git, SonarQubeModular architecture, Clean Code, continuous integration, progressive refactoringInternational Scrum (30+ people), complex merges and versioning🚀 Key Achievements→ Progressive technical front-endredesign**: migration **JavaScript→TypeScript→ In-depthrefactoringof critical components (hooks, modularization, typing)→ Implementation of a robust testing strategy (unit & functional) withJest→ Active collaboration with the QA team and PO to stabilize deliveries→ Use ofAI Cursorlocally to accelerate test writing, refactoring, and understanding of legacy code📊Results & Impact• Modernized, better-typed, more maintainable codebase• Reduction of critical regressions (-30%) through automated testing• Smoother user experience thanks to targeted optimizations• Continuous improvement of technical debt in a demanding environment
- SchoolmouvFull-Stack Developer (React.js,Typescript,Next.js,Node.js)EDUCATION AND E-LEARNINGMarch 2022 - September 2022 (7 months)Lyon, FranceParticipation in the development of a digital education web platform for creating interactive textbooks for teachers.🎯 ObjectiveDevelop a robust, modular, and scalable **MVP**, with a strong emphasis on code quality, project structure, and speed of deployment.🛠️ Stack & MethodologyReact.js, Next.js, TypeScript, Tailwind CSS, StorybookHexagonal architecture, Jest, Testing Library, CI/CDNode.js, Express, Swagger, PostgreSQL, typed REST APIs (DTOs, Zod)Agile methodology (Scrum/Kanban) – team of 7 people🚀 Key Achievements→ Design and development from scratch of theMinimum Viable Product (MVP)→ Structuring technical choices: **hexagonal architecture**, strong typing, separation of business logic/components→ Creation of a reusable component library withStorybook→ Development of unit and functional tests to ensure stability→ Development ofNode.js/Express**REST APIs** documented with **Swagger**, integrated with the platform→ Maintenance and technical support on existing projects (Flutter,Vue.js)→ MentoringReact/Next.jsfor junior developers📊Results & Impact• Rapid delivery of a functional, stable, and structured MVP• Modular codebase, ready to evolve towards advanced features (multi-tenant, AI, analytics…)• Standardization of components, accelerating future developments• Improvement of code quality and team skill development
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Education
- Application Developer DesignerO'Clock2021La formation de concepteur développeur d'applications ma permis de : * Concevoir et développer des composants d'interface utilisateur en intégrant les recommandations de sécurité. * Concevoir et développer la persistance des données en intégrant les recommandations de sécurité. * Concevoir et développer une application multicouche répartie en intégrant les recommandations de sécurité. Durant ma formation, j'ai réaliser plusieurs projets de leur gestion à leur réalisation.
- Web/Mobile DeveloperO'Clock2018Formation Développeur logiciel de 5 mois labellisée Grande Ecole du Numérique. ▶️ Le Socle : 3 mois Linux, Apache, HTML5, CSS3, Intégration selon charte graphique, Git, GitHub, PHP, Javascript, jQuery, SEO, SQL, Bootstrap, Responsive Web, POO, AJAX, MVC, Méthodes Agiles & Scrum, Réalisations Cahiers des charges, Réalisations de Wireframes, SEO. ▶️ Spécialisation React : 1 mois Ecosystème Javascript avec ES2015 et la librairie REACT Programmation fonctionnelle, NPM, Yarn, WebPack, Babel, ES.next, React, ReactDOM, JSX, Redux, React-Redux, React-Router, Axios, Test Mocha, Chai, Enzyme. ▶️ Projet : 1 mois Réalisation d'un projet client-serveur et web en équipe avec un dossier présentant le projet pour l'examen.
Certifications
- LangChain for JavaScript DevelopmentLinkedin2025
- Complete Video Game Developer Course - Unity3dUdemy2018