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Guillaume VerstraeteGV

Guillaume Verstraete

Lead Developer | Typescript JS PHP

€550/day
Strasbourg, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Developer since 2003, my experience has led me to support all types of projects, from small showcase websites to large video portals, including marketplaces, for small startups to large corporations. Sometimes, these projects could be complex, requiring rigor and performance. That's why I have a large number of technologies and methodologies acquired over the years in my toolkit, which I continue to collect with passion.
I place great importance on quality, particularly through testing and the implementation of CI/CD processes, but also in choosing architectures adapted to projects.

Since 2014, I have acquired complementary skills in management and product management (methodology implementation, recruitment...), which allows me to intervene on organizational issues.

I am able to take on different types of missions:
- ad-hoc development, individually or within an existing team
- architecture implementation, refactoring
- training in PHP (pure or Symfony) and Javascript/Typescript
- technical audit

Since 2025, I have been coding with Claude Code in agentic mode.

Feel free to come and discuss your needs!
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Ecov
    Lead Developer
    TRANSPORTATION
    September 2025 - Today (11 months)
    Supervising a squad of 4 developers and 1 PM.
    Development in an event-driven architecture.
    - Continuous improvement of the internal support tool for carpooling users (UX, status of our internal services, etc.)
    - Tech lead on a software migration for variable message signs (VMS)
    - Tech lead on compliance for the deletion of user personal data (GDPR)
    - etc.
    Technical Project Management Typescript Team Management
  • Université de strasbourg | Unistra
    Teacher
    September 2025 - Today (11 months)
    Teaching the module "Object-Oriented Software Analysis and Architecture" in a Master's degree in Computer Science.
    Teaching Software Architecture
  • Lonestone
    Lead Developer
    DIGITAL AND IT
    July 2022 - January 2025 (2 years and 6 months)
    Backend development (PHP, JS/TS) and frontend (React).
    Assisting clients in defining their needs, in pre-sales and during assignments.
    Audits and recommendations.
    Recruitment interviews.
    React.js Typescript PHP Symfony NestJs

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Education

  • Master of Multimedia Products and Services
    University of Franche-Comté
    2010

Certifications

Skill set

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