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Jean-Baptiste C.JC

Jean-Baptiste C.

Fullstack JS | React/Next | Fast Bugs & Sites

€400/day
33 projects
París, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jean-Baptiste

JS Fullstack Developer — Fast Sites, Apps, Bugs & Improvements

Web developer with 17+ years of experience, I help you quickly create, fix, or improve your websites and applications.

👉 Need an efficient, no-fuss developer? I adapt.

I work on:
  • Website or app creation
  • Feature addition
  • Bug fixing
  • Performance optimization
  • API / database connection

Stack:
React, Next.js, Node.js, JavaScript, HTML, CSS
MongoDB, SQL, DynamoDB — GitHub, Vercel

Specifically, I can:
  • Create a website or app from A to Z
  • Quickly add a feature
  • Fix a bug (even urgent ones)
  • Improve a slow website
  • Take over an existing project

I've worked on high-traffic projects (Renault, Société Générale, CANAL+, etc.), which allows me to be fast, efficient, and reliable, even on complex topics.

Today, I apply this experience to missions of all sizes.

👉 Goal: Get to the essentials and deliver quickly.

My working style:
  • Quick understanding
  • Simple and effective solution
  • Fast delivery
  • Clear communication
  • Spanish

    Native or bilingual

  • English

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Edgee
    Software Engineer
    TECH
    October 2025 - Today (10 months)
    Paris, France
    At Edgee, I build edge-first applications that launch faster than a Monday morning coffee. My work revolves around crafting clean, scalable architectures and enhancing performance at every layer—from backend logic to the user experience. I design and maintain open-source WebAssembly components that replace traditional integrations with lightweight, privacy-respecting modules running right at the edge.

    When I'm not chasing down unnecessary milliseconds or refactoring code for elegance, I’m collaborating with the team to push the boundaries of what edge computing can do. Fewer client-side scripts, smarter data processing, and web experiences that just feel faster.
    Next.js Node.js Rust Goland React.js
  • Daslab
    Lead Front-end Engineer
    HEALTH AND WELLNESS
    February 2023 - January 2025 (1 year and 11 months)
    Munich, Germany
    As Lead Front-End Developer at Daslab, a healthtech company focused on cancer detection, I was responsible for overseeing the entire front-end environment—from strategic decision-making to hands-on solution development.

    I focused on optimizing the architecture of applications within a dedicated monorepo ecosystem, ensuring efficient testing and deployment workflows tailored to each app. I led the implementation, management, and tracking of the most complex and innovative features across our platforms. Additionally, I fostered a culture of best coding practices by challenging teams and promoting a modular approach to architecture. Collaborating closely with both engineering and product teams, I continuously drove innovation to deliver the best possible solutions for our users.
    Next.js Node.js JavaScript Goland Vite.js
  • Kameleoon
    Head of Architects
    TECH
    July 2013 - February 2023 (9 years and 7 months)
    Paris, France
    Management of the JS Architect team: ensure daily follow-up of the team (1to1, team points, framing of missions, code reviews, trainings), support progress in holding their position (skills development techniques & business, soft skills), develop the team (recruitment, evolution of each person's missions) to meet the support needs of customers on development topics (including Server Side and mobile SDK)

    Resolution of advanced technical issues, implementation of an architecture and configuration of the development environment (process management, monitoring). Development of modules and services for the kameleoon product (Bridges, CRM, kameleoon npm packages). Presales and technical support for customer success managers. Role of technical referent.
    Javascript Node.js React.js Next.js Web Integration

Reviews

4.9

Out of 31 ratings

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Account deleted

Reviewed on 1/14/2019

Professional, fast, efficient, and attentive. It's always a pleasure to work with Jean Baptiste.
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Reviewed on 12/23/2018

Jean-Baptiste was very friendly and responsive, he proposed options we hadn't thought of ourselves. We were very satisfied in all aspects and recommend his services.

Recommendations

Nathan VeneziaNV
FU
Stéphane RegnierSR
+6
Nathan Venezia and 8 other people have recommended Jean-Baptiste

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Education

  • Advanced Technician Certificate in Management Information Systems - Application Developer
    ICOF
    2006

Skill set

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