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Mustapha H.MH

Mustapha H.

Web Developer | Next.js | React.js | Typescript

€550/day
Paris 19e Arrondissement, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mustapha

Senior Full-Stack Developer | React/Node.js Expert

🚀 My expertise:
I have designed complex solutions for 400+ hotels generating millions of transactions. I combine technical excellence with product vision to create tangible value.

💡 Technical Stack:
• Frontend: React, Next.js, TypeScript, Tailwind CSS
• Backend: Node.js, Fastify, Express, NestJS, REST/GraphQL
• Cloud: GCP, Docker, Terraform, CI/CD
• DB: PostgreSQL, MongoDB, Redis
• Payment: Stripe, PayPal, Adyen (PCI-DSS)
• AI: OpenAI GPT-4

✅ Key Achievements:
• E-commerce widget: +€2M revenue/year for clients
• Multi-channel analytics: Unified Mixpanel/GTM
• Payment API: Multi-provider, -70% integration time
• AI module: +15% conversion
• Performance: -40% loading time

🎯 My Added Value:
• Agile delivery with weekly demos
• Automated tests 85% coverage
• Scalable microservices architecture
• Understanding of business challenges

📊 Recent Projects:
• Calistock: Self-storage platform, online booking (Next.js/Strapi)
• TotalEnergies: Electron desktop app (VivaTech 2024)
• TripsEvents: Motorcycle travel booking (Next.js/Stripe)
• Novads: AI advertising creation (GCP Vision)
• B2C Buzz: Contest SaaS (Next.js/Stripe)
• Walettly: Loyalty card SaaS for Apple & Google Wallet (Next.js/Fastify)
• @t Work: Coworking showcase site (Next.js)
• Epify: PPE management SaaS (Next.js/Strapi)

🤝 Collaboration:
Daily communication • Code review • Documentation • Post-delivery support

Available immediately- Quote within 24h
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris 19e Arrondissement (up to 50km)

Experience

  • Sanilya creation
    Software Engineer
    E-COMMERCE
    May 2025 - August 2025 (3 months)
    Paris, France
    Sanilya Création - Custom E-commerce Store for Personalized Gift Boxes

    The Challenge

    Create a custom online store for selling gift boxes, stationery, and engraved items with real-time personalization and complete production management.

    My Solution

    Development of a complete e-commerce site with instant visual customization and production chain automation.

    Tech Stack:Next.js, React, Node.js, PostgreSQL, Strapi (CMS), Stripe, PayPal, Cloudinary, VPS hosting

    Key Features:
    -Real-time Customization:Instant product preview with customer's entered text/name
    -Dual Payment Solution:Stripe and PayPal to maximize conversions
    -Production Back-office:Automatic generation of order forms with customization details for the workshop
    -Automated Inventory Management:Real-time quantity tracking with stock-out alerts
    -E-commerce Optimization:Promo codes, upsell/cross-sell, abandoned cart recovery
    -Visual Management:Cloudinary integration for automatic product image optimization

    Measurable Results

    200 orders/monthprocessed automatically
    Optimized conversion ratethanks to immediate visual customization
    Zero production errorswith automated and detailed order forms
    Delivered in 2 monthswith advanced e-commerce features

    Added Value

    -Premium customer experience:visualization of the personalized product before purchase
    -Production automation:direct link between web order and workshop
    -Dual payment:maximum flexibility for customers (Credit Card and PayPal)
    -Simplified management:centralized inventory, orders, and production

    Technologies:`Next.js` `React` `Node.js` `PostgreSQL` `Stripe` `PayPal` `Cloudinary` `Strapi CMS` `VPS` `E-commerce`
    PostgreSQL Node.js Strapi CMS Cloud Computing NodeJS
  • Tripsevents
    Tripsevents - Motorcycle Travel Booking Platform
    TRAVEL AND TOURISM
    March 2025 - May 2025 (2 months)
    Paris, France
    The Challenge

    Create a comprehensive platform allowing motorcycle trip organizers to fully digitize their business: trip publishing, online booking, secure payments, and automated administrative management.

    My Solution

    End-to-end development of a complete marketplace with an online booking and payment system.

    Tech Stack:Next.js, React, Node.js, PostgreSQL, Strapi (CMS), Stripe, Tailwind CSS

    Key Features:
    -Smart Booking System:Real-time availability management with automatic seat locking
    -Installment Payments:Deposit upon booking + balance before departure via Stripe
    -Automated Refunds:Cancellation management with scheduled refunds according to conditions
    -Automated Notifications:Transactional emails via React Email (confirmations, reminders, modifications)
    -Organizer Dashboard:Complete tracking of registrations, payments, statistics, trip calendar, and participant management

    Measurable Results

    21,000 bookingsprocessed since launch
    100% automationof the booking process
    80% reductionin manual administrative management time
    Delivered in 3 monthswith an operational and profitable platform

    Added Value

    -Revenue Growth:ability to manage hundreds of simultaneous bookings
    -Smooth Customer Experience:booking in 3 clicks with immediate confirmation
    -Total Autonomy:the organizer manages everything from their dashboard
    -Financial Security:secure Stripe payments with complete traceability
    PostgreSQL Next.js Stripe TailwindCSS
  • TotalEnergies TOTSA
    Software Engineer Electron
    ENERGY AND UTILITIES
    March 2024 - June 2025 (1 year and 3 months)
    Paris, France
    TotalEnergies VivaTech 2024 - Interactive Touchscreen Application

    The Challenge

    Develop an interactive touchscreen application for TotalEnergies at the VivaTech 2024 trade show. Major constraints: 100% offline operation for 7 consecutive days, and development without access to the final touchscreen hardware.

    My Solution

    Standalone Windows desktop application (Electron.js, TypeScript, Tailwind CSS) with local content (HD videos, interactive Q&A flow).

    Technical Innovations:
    - Adaptive resizing algorithm allowing the interface to automatically adjust to any resolution without prior testing on the final hardware
    - HD video optimization for smooth continuous playback without degradation
    - Optimized touch interface with generous click areas and immediate visual feedback

    Measurable Results

    72,000 interactionsduring the trade show week
    7 days of continuous operationwithout crashes or slowdowns
    100% availability- No technical incidents
    Delivered in 3 monthswith strict adherence to the event schedule

    Added Value

    -Zero riskat an international visibility event in front of thousands of professionals
    -Total autonomy:no technical intervention required during the show
    -Brand image preservedfor a CAC 40 company
    -Adaptable solutionworking on any hardware thanks to the intelligent algorithm
    Electron Typescript TailwindCSS JavaScript Node.js

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Education

  • Fullstack Web Developer
    O'clock
    2021

Skill set

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