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Johann G.JG

Johann G.

Senior Lead dev/Developer experience engineer

€589/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Johann

Freelance Full-Stack developer and Developer Experience consultant, with 7 years of experience in API development, improving workflows, delivery pipelines, and developer productivity. I design efficient CI/CD systems, set up Docker-based environments, and optimize development processes using GitLab, Node.js/TypeScript, .NET, and PHP.

I assist teams by reducing friction, accelerating deployment, and introducing sustainable engineering practices through automation and modern tools. In addition to workflow optimization, I can also contribute directly to development, coding quickly and efficiently to help teams deliver high-quality features faster.
  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • FLOA
    Lead developer / Developer experience engineer
    BANKING AND INSURANCE
    April 2019 - December 2025 (6 years and 8 months)
    Bordeaux, France
    At FLOA, I held the position of Lead Full-Stack Developer with a focus on the Developer Experience Engineer role. As a lead developer, I contributed to the design and development of backend APIs in PHP, .NET, and TypeScript, ensuring code quality, performance, and maintainability across multiple projects. I also guided the team through architectural decisions, code reviews, and hands-on, operational development.

    In my Developer Experience role, I focused on improving engineering workflows and accelerating deployment. I implemented Docker-based environments, designed and deployed a complete CI/CD pipeline on GitLab, and automated key processes such as unit tests, functional tests, and validation steps. I improved environment variable management, set up automated alerting systems, and standardized project structures to reduce friction and increase developer productivity. I also worked closely with development teams, providing support, diagnostic assistance, and technical improvements to enable them to work more effectively.

    Overall, my mission was to modernize tools, streamline development practices, and create a faster, more reliable, and more productive engineering environment; and of course, to develop new features quickly and efficiently while adhering to best practices.
    Docker Gitlab CI/CD .NET JavaScript PHP
  • Objectware
    Analysis and Development Engineer
    August 2017 - April 2019 (1 year and 8 months)
    Bordeaux, France
    Carried out a mission for the Museum of Natural History in Paris involving the deployment of an automatic website creation tool for observatories. The project used PHP/Symfony technologies. This mission also included a few months of freelance work on the continuation of development (solo) based on a technical specification.
    PHP Symfony
  • Le Web Français
    Web Developer
    September 2015 - July 2017 (1 year and 10 months)
    Bordeaux, France
    Developed PHP/Symfony websites for numerous clients. Implemented automatic backup solutions for websites and databases to a remote server. Created a WordPress site generator to establish a solid foundation enabling development teams to work efficiently.
    PHP Bash Server Administration Wordpress B2B

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Education

  • Bachelor
    EPITECH
    2015

Skill set

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