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David S.DS

David S.

Web & Mobile Developer | React, Next.js, Node.js

€475/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About David

DAVID IN A FEW WORDS

As a MERN Stack developer and expert in cross-platform mobile development with React Native and PWA, I help companies build high-performing and scalable web and mobile solutions. Here is a description of my skills and responsibilities:
  • MERN Stack Development (MongoDB, Express.js, React.js, Node.js):

I handle the complete development of applications using the MERN stack.
I design and maintain robust backends using Node.js and Express.js, creating RESTful APIs to efficiently manage CRUD operations.
I optimize MongoDB usage for fast data storage and retrieval, ensuring a scalable database architecture.
I seamlessly integrate UI/UX mockups, collaborating with design teams, to ensure a user-friendly and aesthetically pleasing interface.
  • Cross-Platform Mobile Development with React Native:
I offer mobile-first solutions by developing cross-platform applications (iOS and Android) with React Native, enabling companies to reach a wider audience without sacrificing performance.
I ensure user interface optimization to deliver a smooth and consistent experience across all mobile devices.
  • Progressive Web Apps (PWA):
I create Progressive Web Apps to deliver web applications that are fast, responsive, and accessible offline.
PWA offers a flexible alternative to native applications while allowing for rapid deployment and continuous updates.
  • Custom CRM:
I design and develop fully customized Customer Relationship Management (CRM) systems, tailored to the specific needs of each business.
I implement solutions for efficient customer management, lead tracking, and automation of administrative tasks to maximize team productivity.
  • French

    Native or bilingual

  • Hebrew

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • bailnotarie
    Fullstack Developer – Showcase Website & Notary Lease Management Platform
    LEGAL
    August 2025 - Today (10 months)
    Paris, France
    For Bail Notarié, I developed a professional showcase website optimized with unparalleled SEO, coupled with an active blog to improve search engine ranking and attract new clients.

    • Modern Showcase Website: Clear and responsive design to highlight notary services.

    • Advanced SEO: Technical and editorial optimization, combined with a dynamic blog managed via a custom back-office.
    • Business Management Interface: Development of a dedicated space to manage notary leases, automate their generation, and track the entire process.

    • Secure Document Collection: Implementation of a system for collecting necessary identity documents and proofs.
    • Electronic Signature: Integration of DocuSign to legally validate leases.

    👉 This project enabled Bail Notarié to have a complete solution combining visibility, acquisition, and business process automation, while ensuring security and legal compliance.
    SEO signature électronique Next.js Identité visuelle React.js
  • NCS presta
    Web Developer – Professional Showcase Website & Digital Infrastructure (Next.js)
    TECH
    July 2025 - August 2025 (1 month)
    Paris, France
    For NCS Presta, I designed and developed a professional showcase website to highlight its services and help launch its business.

    • Showcase Website Development (Next.js / React): Clear and modern presentation of services offered.

    • Setup of a Complete Infrastructure: Configuration of hosting, professional emails, and integration of Calendly for appointment scheduling.
    • SEO: Natural referencing optimization to ensure visibility and client acquisition.

    • Launch Support: Implementation of all necessary digital tools to start the business under favorable conditions.

    👉 This project allowed NCS Presta to have a credible, professional online presence optimized for attracting its first clients.
    Développeur Next.js SEO calendly Hébergement Gestion mails
  • DADtech
    Web Developer – Professional Showcase Website & Lead Generation
    SOFTWARE PUBLISHING
    March 2025 - May 2025 (2 months)
    Paris, France
    For DADtech, I designed a professional showcase website in Next.js to effectively present the business and optimize online visibility.

    • Modern Showcase Website: Responsive and optimized development in Next.js to highlight the agency's services.

    • Professional Email: Configuration and setup of a professional email address to enhance credibility and communication.
    • Lead Generation: Integration of forms connected to Brevo for lead collection and tracking.

    • Advanced SEO: Technical and editorial optimization for high-performing and sustainable natural referencing.

    👉 This project enabled DADtech to have a credible, high-performing, and acquisition-oriented website, combining showcase, lead generation, and SEO strategy.
    Site vitrine Next.js SEO Gestion mails Identité visuelle

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Education

  • full stack
    webschool
    2021
    Devloppement WEB full-stack

Certifications

  • Full stack
    Webschool
    2021
    MERN Développement Front-End Développement Back-End Application Mobile MongoDB Node.js Express.js React.js Développement full-stack

Skill set

Categories