Freelancer profile translated to English.
Back to original languageAbout Hadi
Next.js Developer | React | Node.js | Fullstack JavaScript/TypeScript
Is yourSaaSapplication struggling? Is yourMVPnot progressing fast enough? Are you looking for afullstack developerwho understands yourbusinessbefore touching the code?
I code AND I understand your P&L. CTO mindset, developer execution.
Concrete results delivered for my clients:
-SaaSInventory Application: -95% errors, +500 active users
- **B2B Marketplace**: +16% revenue
- Real-time Dashboard: 100k events/day
- **SaaS Platform**: x3 performance
My missions:
- Development ofweb and SaaS applications (React.js, Next.js, Node.js, TypeScript)
- Creation ofturnkey fullstack MVPs
- Takeover andoptimization of existing applications
- Technical architecture and deployment
- **API Integrations**: Stripe, OpenAI, OAuth/SSO
-Migrationand website redesign
-Technical Auditof your project
Why my clients return:
- I challenge your approach and identifybusiness optimizationsyou hadn't seen
- Full autonomy: from design to deployment, you don't need to hold my hand
- **Documented TypeScript code**, tested, ready to evolve
- Transparent and proactivecommunication
Stack: React.js, Next.js, TypeScript, Node.js, PostgreSQL, MongoDB, Prisma, TailwindCSS, Docker, AWS, Vercel, REST API, GraphQL, tRPC
Services: SaaS Development | Next.js App | Node.js / Express API | Headless E-commerce | AI Integration | Migration and Redesign | OAuth / SSO | Stripe | Web Application | Dashboard | Automation
My process:
1. 30-min call to define your needs
2. Clear and costed roadmap
3. First 2-week sprint
4. Regular demos, full visibility
Ready to launch your web development project?
👉 Contact me (response within 1h).
French
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Paris (up to 50km), Nantes (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Marseille (up to 50km)
Experience
- SoHoftFullstack Web Developer | Next.js | React.js | TypescriptDIGITAL AND ITJune 2025 - Today (1 year)Toulouse, France→ Mission Objective:Develop a SaaS furniture inventory management application to replace Excel, automate pricing, and digitize internal processes.→ Achievements:-Implementation of a modern fullstack web application using React.js, Next.js, TypeScript, and TailwindCSS, offering a fluid user experience, responsive dark mode, and a highly customized interface to enhance perceived quality.-Robust backend development with tRPC, PostgreSQL, and Prisma ORM, enabling a secure multi-tenant architecture, automated workflow, and a -95% reduction in errors through process digitalization.-SSO integration via Microsoft Azure AD, scalable deployment with Docker and CI/CD, ensuring optimal performance, significant time savings, and a solution ready for 1000+ users and future CRM integrations.→ Technical Stack:Next.js 15, React 19, TypeScript, tRPC, PostgreSQL, Prisma, TailwindCSS, Docker, CI/CD, Azure AD
- BriefyFullstack Web Developer | Next.js | React.js | Node.js | TypescriptDIGITAL AND ITApril 2025 - June 2025 (2 months)Paris, France→ Mission Objective:Develop a freelance management SaaS MVP integrating automation and artificial intelligence to centralize tools and optimize the quote-to-invoice cycle.→ Achievements:-Design of a fullstack web application, React 19/TailwindCSS frontend, multilingual with Zustand state management, offering a fluid, responsive, and intuitive interface, validated by 50+ beta testers.-Implementation of a Node.js/Express backend with MongoDB, REST API secured by JWT, ensuring a scalable and performant architecture for rapid scaling.-Integration of OpenAI GPT-4 for intelligent brief generation and an automated invoicing module with Stripe, enabling time savings, professionalization of deliverables (PDF, notifications), and centralization of 3 tools into 1.→ Technical Stack:React, Vite.js, Node.js, Express, MongoDB/Mongoose, TailwindCSS 4, Zustand, OpenAI GPT-4, Stripe, JWT, Nodemailer, i18next
- MH Dev SolutionsFullstack Web Developer | Next.js | React.js | Node.js | TypescriptSOFTWARE PUBLISHINGSeptember 2022 - Today (3 years and 9 months)Paris, France→ Mission Objective:Design and develop high-performance, scalable SaaS MVPs and web applications in React.js / Next.js, tailored to the specific needs of SMEs and startups.→ Achievements:- Scalable and maintainable MVP web development- Development of 15+ SaaS projects from scratch in fullstack (CRM, booking systems with Stripe, admin dashboards) using React.js, Next.js, TypeScript, and TailwindCSS for the frontend, offering modern, SEO-first interfaces (Lighthouse >95) with an average ROI of +40%.- Implementation of robust backend architectures with Node.js, REST/GraphQL APIs, PostgreSQL, Docker, enabling highly scalable applications with -40% loading time and -30% server response time.- Integration of advanced solutions (OpenAI GPT-4, Microsoft Entra ID SSO, automated CI/CD), ensuring security, performance, and time savings, while maintaining high customer satisfaction (80% repeat business).→ Technical Stack:JavaScript, React 19, Next.js 15, TypeScript, Node.js, PostgreSQL, MongoDB, TailwindCSS v4, Docker, AWS, CI/CD, GraphQL, Stripe, OpenAI
Reviews
Recommendations
+1
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Education
- Web and Mobile Application Designer-DeveloperLa Capsule-Formation intensive Full-Stack JavaScript - Niveau 6 (Bac+4) -Projets réalisés: E-commerce, Réseau social, App mobile -Stack technique: MERN (MongoDB, Express, React, Node.js) -Méthodes agiles, Git-flow, Tests unitaires
- Mathematics & Computer ScienceUniversité Paris-Est Créteil (UPEC)2020-Spécialisation en algorithmique -Projets de développement logiciel -Bases de données et modélisation
Certifications
- Web & Mobile Application Designer Developer | Bac +4La Capsule2024
- Full-Stack Engineer Career PathCodecademy2024