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Jérémy ChastangJC

Jérémy Chastang

Symfony Back-End Developer

€400/day
Clermont-Ferrand, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jérémy

PHP / Symfony backend developer with React skills, passionate about web development, I enjoy transforming complex business needs into solid, well-built applications.
What characterizes me: I like to understand the core of a project before writing a single line of code. Whether designing a REST API from scratch or building a complete information system, I invest myself in each project as if it were my own.
Autonomous and rigorous, I know how to work in a team while being capable of making technical decisions alone. I mainly work in PHP / Symfony backend and can also contribute on the frontend with React depending on the project needs.
My goal on each mission: to deliver something I'm proud of and that lasts over time.
  • French

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • VVF
    Symfony Back-End Developer
    October 2016 - Today (9 years and 8 months)
    Clermont-Ferrand, France
    Symfony Back-End Developer | REST API
    I am a backend developer specializing in Symfony and REST APIs, with expertise in designing and developing robust and high-performance web applications.
    I work on:
    Development of RESTful APIs (JSON, JWT, OAuth2)
    Responsible for the architecture of new applications
    Integration and communication with external APIs
    Doctrine ORM and SQL query optimization
    Message-oriented architecture with RabbitMQ
    Continuous integration with GitHub Actions or GitLab CI
    Automated testing (PHPUnit, functional tests)
    Code quality: PHPStan, Psalm, Rector, Deptrac
    AI-assisted development (GitHub Copilot, Claude…)
    Best practices: SOLID, DDD, Clean Architecture
    Usual stack: Symfony 8 · Doctrine · RabbitMQ · MySQL/PostgreSQL · PHP 8.5 · Git
    Rigorous and autonomous, I enjoy tackling technical challenges on high-stakes projects. Available for remote missions or in Clermont-Ferrand
    Symfony PostgreSQL RabbitMQ Messenger REST APIs
  • RedKeet
    Web Developer
    September 2015 - September 2016 (1 year)
    Clermont-Ferrand, France
    Full-stack PHP/Symfony Developer
    Development from scratch of the entire information system for a tourism company
    Within a small team, I designed and developed a complete suite of business web applications in PHP/Symfony from scratch, covering all the company's operational needs:

    PIM (Product Information Management) — centralization and management of product data
    DAM (Digital Asset Management) — management of digital resources (images, media)
    Inventory Management — real-time tracking of availability
    Price Management — pricing configuration and rules
    Individual Sales Application — purchase process and booking for individual clients
    Group Sales Application — management of bookings and quotes for groups
    Website with back-office — public interface and dedicated administration tool

    Each application was designed to be integrated into a coherent ecosystem, with shared data between modules.
  • CGI
    Intern Developer
    January 2015 - July 2015 (6 months)
    Grenoble, France
    Mobile Application Developer
    Adding features to a mobile application for managing electric meters
    During this 4 to 6-month internship, I contributed to the development of an existing mobile application dedicated to the management and monitoring of electric meters for SIASI.
    Responsibilities:

    Analysis of existing code and familiarization with the application
    Development and integration of new features
    Management and display of electric meter data

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Education

  • Master Web, Computer Science and Knowledge, Computer Science
    Université Pierre Mendès-France
    2015
    Master Web, Informatique et Connaissance, Informatique
  • Professional Bachelor's Degree in Intranet/Internet Application Development
    IUT Clermont Ferrand
    2013
    Licence Professionnelle Développement d'applications Intranet/ Internet

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