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François P.FP

François P.

Product Engineer | Sovereign Cloud | Eco-design

€450/day
Rennes, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About François

Hybrid developer with a strong Product vision, I support companies in creating robust applications where data mastery and software sobriety are priorities. My approach is based on a crucial trio today: technical sovereignty, energy efficiency, and business relevance.

🇫🇷 Sovereignty & Cloud
I help my clients break free from major technological dependencies by favoring European infrastructures (OVHcloud, Scaleway).

Infrastructure as Code: Automated and secure deployment with Terraform and Linux.

Independence: Architecture designed for reversibility and data protection (GDPR).

🌱 Digital Eco-design
Developing is no longer enough, you have to develop rightly. I apply sobriety principles to reduce the carbon footprint of your services:

Backend Optimization: Performant code in Go or Java to minimize CPU/RAM consumption.

Data Efficiency: Optimized SQL modeling to reduce unnecessary queries and superfluous storage.

Responsible Frontend: Fluid interfaces (React/Angular) designed to be light and accessible.

🛠 Technical Expertise & Product Vision
My Product Owner / Dev profile allows me to translate your business needs into technical solutions without unnecessary jargon:

Backend: Robust APIs (Go, Java), microservices architectures, and complex SQL.

Frontend: Modern and scalable interfaces.

Quality: Test automation (JUnit, Playwright) for simplified maintenance.

My goal: To create with you a product that you fully own, technically sustainable, and aligned with your societal responsibility (CSR) challenges.
  • English

    Native or bilingual

  • German

    Fluent

  • Portuguese

    Fluent

  • Spanish

    Conversational

  • French

    Native or bilingual

  • Chinese

    Conversational

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

Experience

  • AMJ Groupe
    Fullstack Developer - Devops - PO
    SOFTWARE PUBLISHING
    September 2023 - Today (2 years and 9 months)
    Pacé, France
    💻 Backend Development & Software Sobriety

    REST API Design (Java Spring Boot, Hibernate, Go): Modular development prioritizing code efficiency to reduce server load and energy consumption.

    PHP Architecture (Symfony, Custom Framework, Native): Maintenance and optimization of legacy systems to extend application lifespan and avoid costly resource-intensive refactors.

    Database Optimization (PostgreSQL, MySQL): Complex schema modeling and SQL query optimization to minimize disk I/O and storage.

    🎨 Frontend & Accessibility

    Dynamic Interfaces (Angular, TypeScript): Creation of lightweight and performant frontend architectures, limiting page weight for smooth navigation, even on low-bandwidth networks.

    🛡️ Quality & Technical Sovereignty

    Testing & Reliability (JUnit, Mockito): Implementation of rigorous test coverage to ensure the longevity of sovereign solutions and reduce resource-consuming bugs.

    Technical and Functional Specifications: Writing clear documentation focused on reversibility (avoiding vendor lock-in) and business alignment.

    Agile Project Management (Jira, Redmine): Iterative management allowing for precise adjustment of the functional scope to the exact needs ("Green IT": developing only what is necessary).
    Java Angular End-to-End Testing PHP Symfony DevOps
  • WebCreation TP
    Freelance Developer - Devops
    SOFTWARE PUBLISHING
    January 2022 - January 2023 (1 year)
    Rennes, France
    🚀 Migration to Sovereign CI/CD & DevOps Sobriety

    Objective: repatriate a deployment infrastructure from a US cloud to a solution hosted in France.

    Actions:

    Migration of Jenkins/GitHub Actions pipelines to self-hosted GitLab CI on OVHcloud instances.

    GitLab Workflow Optimization: implementation of aggressive caching and multi-stage builds to reduce computation time (and thus carbon footprint) by 40%.

    Automated deployment with Terraform for "Just-in-Time" resource management.

    🌍 Refactoring of a business application into "Green Computing"

    Objective: lighten a dated and energy-intensive Java Spring Boot platform.

    Actions:

    Audit and refactoring of the Java/Hibernate backend: reduction in the number of SQL queries and optimization of memory management.

    Implementation of targeted JUnit/Mockito tests on critical functions to ensure stability during the removal of unused features (feature cleaning).

    Transition to a lightweight Angular interface (Lazy loading, reduction of asset weight).

    🛡️ Compliance Audit and API Security (Sovereignty)

    Objective: Ensure that no health or sensitive data is transmitted through non-European third-party services.

    Actions:

    Development of robust APIs in Java/Go with data flow isolation.

    Writing technical specifications to ensure full code reversibility and the absence of proprietary "lock-in".

    Deployment via secure containers on sovereign Linux infrastructure.
    OVH Linux Git CI/CD Pipelines DevOps

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Education

  • Certified English Teacher
    Académies de Versailles
    2022
    Professeur d'anglais certifié
  • Professional Master's Degree in Software Architecture - Specialization in AI / Big Data
    Epitech Rennes
    2025
    MsC Pro Architecte logiciel - Spécialisation IA / Big Data

Skill set

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