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Jonathan MargotinJM

Jonathan Margotin

React / Next.js Developer | SaaS & Applications

€430/day
6 projects
Le Mans, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonathan

Do you have a web project to build or an existing application to evolve, but you don't have an in-house developer available? That's where I come in.

Fullstack developer with 4 years of experience on concrete projects:
  • Automotive marketplace
  • Business tools
  • CRM integrations
I design and develop high-performance web applications from A to Z, from the React/Next.js front-end to the back-end API.

What I do concretely:
  • Creation of web applications and SaaS (React, Next.js, NestJS, TypeScript)
  • Back-end development and API integrations (Stripe, Twilio, webhooks)
  • Setting up robust environments (Docker, PostgreSQL, deployment)
  • Taking over and evolving existing projects

I work remotely or on-site within a 50 km radius of Le Mans. Direct communication, clear deliverables, no surprises along the way.
📩 Want to discuss it? Describe your project to me, and I'll get back to you quickly.
  • French

    Native or bilingual

Can work on-site
Le Mans (up to 50km)

Experience

  • Isabelle Calkins
    Malt logoOn Malt
    Online training platform & migration and sales funnel
    HEALTH AND WELLNESS
    March 2026 - March 2026
    Le Mans, France
    Migration of a training platform to Systeme.io with a complete visual redesign of the site. I was responsible for creating sales funnels, configuring automation sequences, and setting up the member area with automatic access management for students upon registration. End-to-end project: from existing audit to go-live, including user journey testing and UX adjustments to streamline the purchasing and training access experience.
    User Experience Design Systeme.io Sales Funnels Web Integration Site Migration or Redesign
  • MeilleureAuto
    FullStack Web Developer
    AUTOMOBILE
    November 2023 - November 2024 (1 year)
    Le Mans, France
    Development of thefirst automotive marketplacein France for used car professionals and individuals.

    Technologies used:Laravel, NextJS.

    Results achieved:Improved user experience with an intuitive interface, development of a vehicle estimation module, and creation of a listing comparator for thousands of used cars 🚗🌐✨.
    Laravel 9 Laravel Nova Next.js Web API
  • eKonsilio
    FullStack Developer
    TELECOMMUNICATIONS
    November 2023 - Today (2 years and 8 months)
    Le Mans, France
    Development of the showcase website for aconversational chatcompany.

    Technologies used:Laravel, Next.js, TailwindCSS.

    Results achieved:Creation of an attractive and functional site, management of the technical aspects, and collaboration with a designer to ensure a polished and professional user interface 🌐🎨✨.
    Laravel 11 Laravel Nova Next.js TailwindCSS

Reviews

5.0

Out of 4 ratings

I

Isabelle

Migration d'une plateforme à une autre - Isabelle Calkins

Reviewed on 4/18/2026

Superb work from Jonathan, as usual! I highly recommend him.
I

Isabelle

Migration d'une plateforme à une autre - Isabelle Calkins

Reviewed on 3/21/2026

I've worked with Jonathan on several projects and each time, I'm more than satisfied. I highly recommend him.

Recommendations

Nabil BlilichNB
Erwin LegrandEL
PF
Nabil Blilich and 2 other people have recommended Jonathan

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Education

  • HTML5 & CSS3 Development
    OpenClassRoom
    2022
    Développement d'un site statique en HTML5 et CSS3

Skill set

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