Freelancer profile translated to English.
Back to original languageAbout Joël
Full‑Stack Developer• Astro, React, Next.js, NestJS (TypeScript, SEO, performance)
What if2 weekswere enough to go from idea to a **fast, measurable, lean product**?
Websites and apps that load quickly, rank better, and convert.4 years of experience. Core Web Vitalsgreen, **careful UX**, **clean SEO**, **reliable CI/CD**.
Regarding offers:
⚡ **7-day Kickstart**: audit (**tech/SEO/UX**), prototype or mini-MVP, roadmap + costing.
🚀 **3–6 week MVP**: lean spec, short iterations, tests, metrics, deployment.
🔧 **Redesign/Scale**: performance (LCP/CLS/TBT), AA accessibility, SEO, modularization, monitoring.
Scope of work:
🎨 **Front & UX**: Astro · React/Next.js · Tailwind, animations, Material 3, AA accessibility, fast interfaces (eco-friendly, optimized weight).
⚙️ **Back‑end & API**: NestJS · Node.js · TypeScript, REST/GraphQL, mono or microservices, serverless (AWS), tests, CI/CD.
📱 **Cross-platform**: Flutter (web, mobile, desktop).
🧩 **CMS & content**: Sanity, Builder.io, WordPress, Shopify.
Method:
1)Discovery(45 min free): objectives + KPI.
2) **Prototype/POC**: validate usage before investing.
3) **Build & ship**: tested code, reviews, metrics, clear documentation.
Guarantees:
Detailed quote within 24 hours+ planning visibility.
Asynchronous communication + weekly check-in.
Clean, tested, documented code.No lock-in: you keep all access.
Results: Lighthouse 90+, LCP < 2.5 s, optimized weight.✅Start within 7 days.
👥 **Clients**: startups, SMEs, e-commerce, SaaS, agencies. 📍 France · remote/on-site.
Stack:
French
Native or bilingual
English
Fluent
Can work on-site
La Bassée (up to 50km), Le Havre (up to 50km), Reims (up to 50km), Neuilly-sur-Seine (up to 50km), Publier (up to 50km)
Experience
- Netsimpler.ioFull Stack Developer at NetSimpler.ioSOFTWARE PUBLISHINGApril 2023 - Today (3 years and 2 months)Le Havre, FranceAt NetSimpler.io, I played a key role in developing a versatile platform, integrating a high-performance showcase website and a scalable back-end. I designed and implemented a microservices architecture using AWS Lambda and AppSync, ensuring optimal scalability, increased flexibility, and high performance in response to diverse user needs.On the front-end, I optimized performance with Astro and developed dynamic user interfaces in React. In 2023, I led the development of @udixio/ui, a custom component library based on Material Design 3, ensuring a modern and consistent user experience while facilitating maintenance. I also integrated Framer Motion to provide fluid and engaging animations, enhancing user interaction.Concurrently, I integrated various CMS such as Sanity and Builder.io to design custom content management solutions tailored to the specific needs of each project.
- WexampleWeb DeveloperTECHFebruary 2022 - March 2022 (1 month)Soissons, France
- Refactoring and improving existing code to enhance quality and maintainability.
- Creating automated tests to ensure feature reliability.
- Developing backend services with the Symfony framework (PHP).
- Intensive 3-week internship focused on development best practices and code rigor.
- Mr Moy YohannWeb Developer Web DeveloperTECHOctober 2021 - January 2022 (3 months)Soissons, France
- Designing mockups and graphic integration respecting the client's visual identity.
- Developing and launching a showcase website using the WordPress CMS.
- Customizing the theme and configuring plugins to meet specific project needs.
- Content management and user experience optimization.
- Initial 6-week internship extended and updated to deepen acquired skills.
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Education
- Professional Title Web and Mobile Web DeveloperSJT2021Apprentissage des fandamentaux du web aussi bien coté frontend que backend.