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Jonathan BernardiniJB

Jonathan Bernardini

Lead Fullstack Developer

€400/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonathan

Hello! I'm Jonathan.


I've been aFullstackDeveloper for several years, and I quickly moved into Lead roles because I'm passionate about both clean code and the overall vision of a product.

My daily work involves transforming complex ideas into fluid and scalable applications. I primarily work withReact, Node.js, and TypeScript,a combination that allows me to be effective across the entire stack, from the front end to database architecture.

Why work with me?

No bottlenecks: I like things to move forward. I prioritize transparent communication and an iterative approach.

Technical & Product Focus: I don't just write code; I get involved in your business challenges to propose the most relevant technical solutions (and not necessarily the most complex ones).

Autonomy: Accustomed to full remote work, I manage my projects rigorously so that distance is never an issue.

If you're looking for a senior profile who can take a step back to see the big picture of your project while also getting hands-on, let's discuss!
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Conversational

Remote only
Primarily works remotely

Experience

  • GMG Santé
    Lead Fullstack Developer
    MEDICAL
    October 2025 - Today (10 months)
    Paris, France
    Lead and mentor a cross-functional development team while architecting end-to-end solutions for both internal tools and external client-facing products. Responsible for the full software development life cycle (SDLC), I oversee the technical roadmap, from designing high-performance SQL database schemas to implementing intuitive frontend interfaces. I bridge the gap between business stakeholders and engineering by translating complex requirements into scalable architectures, ensuring code quality through rigorous peer reviews, and optimizing system performance across the entire stack.
    SQL React.js Node.js Typescript Next.js
  • REVIVE
    Co-Founder
    FASHION AND COSMETICS
    June 2024 - March 2025 (9 months)
    Lebanon
    • - Led full development of the Flutter mobile app, including UI/UX design, frontend/backend integration, and in-app payments via Apple StoreKit and Google Play Billing
    • - Delivered a high-performance, intuitive appointment booking system tailored for businesses to streamline operations and boost client engagement
    • - Developed the web version of the app using Next.js with a microservices architecture, replicating the same core functionalities as the mobile app
    • - Integrated Tap Payments for secure and smooth web-based transactions
    • - Implemented AI-generated business reports (weekly and monthly) using OpenAI, providing owners with smart, actionable insights
    • - Used a modern backend stack: Node.js + TypeScript with Firebase for auth, real-time data handling, and serverless logic
    Flutter Next.js Firebase Google API Node.js
  • L'Association Pour l'Emploi des Cadres,
    Apprenticeship Web Developer
    PUBLIC SECTOR
    October 2022 - September 2025 (2 years and 11 months)
    Paris, France
    Development of internal and external websites and applications | Angular, HTML, SCSS,
    PostgreSQL
    - Mouette (“Where are you working?”): Internal web application developed with
    Angular to track employees' work locations (remote, on-site, absent, or on business travel).
    Full-stack development, including frontend, backend, and database design.
    - Tapir (“Time allocated for staff representative bodies”): Angular-based
    application enabling the tracking of hours dedicated by employees to employee
    representative bodies. It helps managers monitor usage and sends alerts if a predefined
    monthly quota is exceeded. Full-stack development: frontend, backend, and database.
    Angular SQL Java

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Education

  • Master's Degree
    Paris Ynov Campus
    2025
    Master's Degree
  • Bachelor's Degree
    Paris Ynov Campus
    2023
    Bachelor's Degree

Certifications

  • ServiceNow IT Leadership Professional Certificate
    Linkedin
    2025
    Project Management Team Management
  • Career Essentials in GitHub Professional Certificate
    Linkedin
    2025
    Git/GitHub GitHub GitHub Actions

Skill set

Categories