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Valentin VinelVV

Valentin Vinel

NestJS Backend Developer | REST API, PostgreSQL

€340/day
Avignon, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Valentin

I build reliable and structured backends for web applications and SaaS, using Node.js, NestJS, or Express, and PostgreSQL.

Whether it's starting a project from scratch or structuring an existing backend, I handle everything that happens on the server-side: API design, database modeling, authentication, role management, CI/CD.

On the frontend, I'm also comfortable with React / Next.js, which allows me to work on full-stack projects without any blind spots between the two layers.

What I concretely bring:
- REST APIs with Express or NestJS
- PostgreSQL modeling with Prisma or Sequelize
- JWT authentication, role management, and route security
- CI/CD setup and Docker containerization
- Third-party API integration (Stripe, Shopify Storefront, etc..)

Whether you are a startup launching its MVP, an SME looking to structure its existing backend, or a founder with an idea to bring to life, if you need a developer capable of handling the server-side, let's talk.

Available remotely anywhere in France.
  • French

    Native or bilingual

  • English

    Conversational

  • Spanish

    Fluent

Can work on-site
Avignon (up to 40km), Aix-en-Provence (up to 20km), Valence (up to 20km), Lyon (up to 10km), Montpellier (up to 10km)

Experience

  • Speed Importation – Site vitrine
    Creation of a showcase website for a vehicle catalog
    AUTOMOBILE
    February 2026 - March 2026 (1 month)
    - Design and development of responsive and attractive pages

    - Integration of an interactive catalog to display vehicles

    - Implementation of fluid navigation and user-centered design

    - Deployment and monitoring of website availability in production

    Result: functional and intuitive showcase website, facilitating the presentation of services and vehicles to clients.
    Wordpress Showcase Website SEO Optimization
  • Zendo CRM – Projet personnel
    Creation of a custom CRM for freelancers
    SOFTWARE PUBLISHING
    November 2025 - January 2026 (2 months)
    - Development of a complete web application with React/Next and Node.js

    - Contact, task, and invoicing management via Node.js backend API

    - PostgreSQL database to ensure data persistence and consistency

    - Modular architecture, tested and ready to evolve as needed

    - Intuitive user interface to facilitate daily management

    Result: operational CRM, demonstrating the ability to design a complete web solution tailored to real needs.
    React.js Next.js Node.js CRM PostgreSQL
  • Dawa Création - Refonte site e-commerce
    Complete redesign of the e-commerce site via Wix, with user interface optimization
    ARTS AND CRAFTS
    October 2025 - November 2025 (1 month)
    - Creation of a modern and responsive UI to improve customer experience

    - Integration of e-commerce products and features in Wix

    - Optimization of navigation and display to maximize conversion

    Result: redesigned, interactive, and easy-to-maintain e-commerce site, offering a better user experience.
    Wix SEO Optimization E-commerce

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Education

  • Web & Mobile Web Developer
    Ecole O'clock
    2025
    Formation intensive orientée pratique, axée sur le développement fullstack d’applications web en environnement JavaScript. Conception et réalisation de projets concrets en autonomie et en équipe: Node.js, Express, PostgreSQL, Docker, React / Next.js, TypeScript.
  • Bachelor's Degree in Marketing & Communication
    CFC Vincent de Paul
    2021
    Formation orientée stratégie digitale, communication et compréhension des enjeux business, utile pour concevoir des applications alignées avec les besoins clients.

Skill set

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