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Jonas C.JC

Jonas C.

Full Stack Developer

€600/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonas

Available 1 week spread over a month for targeted missions.

I help you develop and optimize your web applications. Trained at 42, I quickly learn new technologies and adapt to your technical environment.
What I bring you:
  • Full-stack development with an understanding of business challenges
  • Refactoring of complex applications and takeover of existing projects
  • Implementation of best practices (CI/CD, architecture, code review)
  • Management of stakeholder needs and technical translation of business requests
Types of missions I handle: full-stack development, technical audit, refactoring, architecture consulting, development of new features.

Mastered stacks: React/Django, PHP/MySQL, MongoDB/HTMX/Alpine, Prestashop.
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Paris (up to 10km)

Experience

  • Label Emmaüs
    Fullstack Developer
    E-COMMERCE
    June 2023 - Today (3 years)
    Noisy-le-Sec, France
    Solidarity marketplace for second-hand products promoting professional integration.
    Team of 2 developers.
    • Takeover and major refactoring of applications (React/Django, Django/MongoDB/HTMX/Alpine) with significant technical debt
    • Significant reduction in core bugs
    • Resumption of training and supervision of 1 apprentice
    • Implementation of development standards: linting, CI/CD, code review, testing
    • Interim product management: bug handling, inter-team communication, functional prioritization
    • Close collaboration with the UX/UI designer
    • Definition of architectural standards to dismantle monolithic code
    • Catching up on versioning-related technical debt: Python, MongoDB, Elasticsearch migrations
    Django Python MongoDB Elasticsearch React.js
  • Certideal
    Fullstack Developer
    E-COMMERCE
    May 2019 - August 2020 (1 year and 3 months)
    Paris, France
    E-commerce site for selling refurbished high-tech products.
    Team composed of 3 developers and 1 CTO.
    I mostly handled the front-end side of the team.
    • E-commerce production environment with high load constraints
    • Creation of new back-end and front-end features, e.g.: implementation of product customization, integration of an external order flow
    • Optimization of front-end performance (changes made in the core of the framework)
    • Management of production deployments, management of production errors
    Prestashop PHP MySQL JavaScript

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Education

  • Digital Technology Architect
    Ecole 42
    Projets développés en C avec des rigueurs de norme, de gestion de mémoire et d'architecture. Un des principaux projets est un shell complet en collaboration avec 3 élèves.

Skill set

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