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Stéphane RathgeberSR

Stéphane Rathgeber

CTO - Expert Technique - PHP - Symfony

€1,200/day
27 projects
Puteaux, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Stéphane

I am aSymfony Tech LeadandPHP developerwith over 15 years of experience, specializing in the development and architecture ofcomplex applications**. I have had the opportunity to work with large companies like **Renaultand **AXA**, as well as startups, which has allowed me to develop a pragmatic and rigorous approach to varied and technical projects.

My expertise:

  • **Symfony**, which I have been using daily since its early versions, particularly its latest iterations (Symfony 4, 5, 6, 7).
  • **PHP**, with a thorough mastery of best practices, application performance, and automated testing (unit and functional).
  • DevOps**, with expertise in setting up and optimizing **CI/CD pipelinesunder GitLab andDockerized deploymentenvironments, facilitating rapid and reliable project delivery.
I often intervene in missions that require technical upgrades, API integration, or stabilization of existing platforms. Beyond technical skills

Methodology

A lover ofAgile methodology**, I adhere to **SCRUMandKanbanapproaches which allow me to structure projects while remaining responsive to unforeseen events. In my daily work, I place particular importance oncode quality(PSR best practices), solution scalability, andoptimization in terms of performanceand security.

What I can offer

  • Solidtechnical expertisein creating and scaling complex applications.
  • Team supportthrough technical coaching and adoption of best practices.
  • A **capacity to resolve complex technical situations**, particularly in terms of performance, backend architecture, and code quality.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Puteaux (up to 50km)

Experience

  • Japan Experience
    Tech Lead
    TRAVEL AND TOURISM
    November 2025 - July 2026 (8 months)
    Paris, France
    Optimizing the customer journey in close collaboration with the Product Owner. Audit and technical analysis of the existing system, optimization recommendations, and Symfony version upgrades. Technical support for the team: implementation of best practices, code reviews, and skill development for developers.
    Symfony Gitlab Google Cloud Symfony 7
  • France Care
    Part-time CTO / Symfony Developer
    HEALTH AND WELLNESS
    May 2025 - Today (1 year and 3 months)
    Puteaux, France
    Technical steering of the project and implementation of a complete patient tracking back-office, compliant with GDPR and HDS.
    Part-time CTO role, with business challenge involvement: defining needs, technical arbitration, prioritization, and team support.

    Integrations performed:
    • Eloquant for call tracking and history,
    • HubSpot and Yousign for file and signature management,
    • Stripe for patient subscription and billing.
    Focus on security, code quality, flux reliability, and automation in a health environment with strong regulatory constraints.
    Symfony 7 Stripe Hubspot HDS Scalingo
  • Safran Electronics & Defense
    Symfony 7 Developer
    DEFENSE AND MILITARY
    November 2023 - November 2024 (1 year)
    Puteaux, France
    Following the takeover of a back-office project at Safran Optronique, I was responsible for evolving an existing application while considering the challenges of a very limited technical handover. My main role consisted of redefining the tool's architecture and functionality, while ensuring security, a paramount concern in this sector.

    Technical Challenges
    • Taking over an existing project with little to no detailed knowledge transfer, requiring a significant portion of the code to be revisited to understand the business and technical logic.
    • Understanding and translating complex technical requirements in a critical environment where data security is central.
    • Integrating improvements for better product scalability and maintainability, while ensuring regular updates without service interruption.
    Symfony 7 Symfony PHP8 Docker

Reviews

5.0

Out of 15 ratings

G

Guy

DIMENSION 4

Reviewed on 3/6/2020

Stéphane is a resourceful developer who took on his mission with great seriousness. It's never easy to integrate into a team, and the feedback from my colleagues is excellent. I highly recommend him.
L

Louis

Brico Brico

Reviewed on 10/9/2023

Recommendations

Mohammed AtifiMA
Nathan CharpentierNC
GB
+1
Mohammed Atifi and 16 other people have recommended Stéphane

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Education

  • BTS - IRIS
    Lycée Blaise Pascal
    2005

Certifications

Skill set

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