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Marc GavanierMG

Marc Gavanier

Supermalter

🎯 Full Stack Web Developer / Software Engineer

€750/day
9 projects
Lyon, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marc

Hello 👋
I am a software engineer, a passionate developer specializing in building complex web applications.
I work on both the back-end and front-end, applying the most demanding software design standards:

👤 Respect for users by placing the business at the heart with *Domain Driven Design*
✨ Solution maintainability with *Clean Code* and *Clean Architecture*
🚀 Optimization and production speed with *TDD* (Test-Driven Development)
🎉 High delivery frequency and automated cloud deployment with *DevOps*.

🛠️My preferred skills

  • Languages: TypeScript, JavaScript, C#

  • Back-end: NestJS, Express, .NET, REST, OpenAPI
  • Front-end: Angular, RxJS, React, Redux, HTML, CSS, Bootstrap, Sass
  • Databases: PostgreSQL, MongoDB, Amazon RDS, DynamoDB
  • DevOps: AWS, Serverless, Terraform, Docker, GitHub Actions, GitLab CI/CD
  • Collaboration: Git, Agile, Extreme Programming, Lean, Kanban, Scrum

🦸‍♂️My areas of intervention

  • Design and development of your MVP, web application, or SaaS
  • Technical audit for quality, maintainability, testability, and scalability
  • Implementation of serverless cloud architectures and automated deployment of infrastructure as code
  • Improvement of the development experience to facilitate feature delivery
  • Enhancement of development teams with the *Software Craftsmanship* approach

🎁My little extras

  • I invest myself in the teams I join and share my knowledge with pleasure
  • Very curious by nature, count on me to take a deep interest in your business
  • All my choices are pragmatic and guided by the value brought to the user.

I would be delighted to chat with you to learn more and tell you how I can put my skills to work for your project 🙂

Marc
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Conversational

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

Experience

  • Conseiller Numérique France Service
    Developer
    PUBLIC SECTOR
    September 2021 - Today (4 years and 9 months)
    Paris, France
    *Conseiller Numérique France Service* is a *state start-up* supported by the Agence nationale de la cohésion des territoires.


    Its mission is to train and deploy 4,000 digital advisors throughout the country to offer support to the 13 million French citizens who have difficulties with digital tools.

    The platform connects candidates for the digital advisor position with host structures (town halls, associations, etc.).

    🌐Mapping

    *Location of the digital advisors' service points across the country*
    • Participation in the initial design and implementation of the *Single Page Application* project
    • Development of components for seamless integration between Leaflet and Angular
    • Integration of views following the State's design system, ensuring display on all screen types
    • Consulting and expertise on Angular and RxJS

    🌐API

    *REST service for managing digital advisors*
    • Improved code testability and maintainability
    • Study on data consistency and correction of identified issues
    • Exports of statistics on digital advisor activity
    • Creation of the API serving geolocation data respecting the *GeoJSON* standard

    🌐Backoffice Portal

    *Tool for administrators, prefects, and host structures to supervise and manage the deployment of digital advisors*
    • Improved search ergonomics for prefects to find structures
    • Added statistics visualization options for prefects

    🌐Advisor Portal

    *Tool for digital advisors to manage their daily support mission*


    • Added CSV export options for statistics
    TypeScript Angular JavaScript React.js Node.js MongoDB TDD Scrum HTML5 CSS3 SASS REST NPM Git Github Actions Jest
  • ADDACTIS Software
    Software Architect
    SOFTWARE PUBLISHING
    January 2018 - September 2021 (3 years and 8 months)
    Tassin-la-Demi-Lune, France
    *ADDACTIS Software* offers a comprehensive suite of actuarial software used by insurers and reinsurers.


    The projects are designed by actuaries and IT professionals, a team of experts to meet the development and security standards required by the insurance sector, as well as auditability and traceability standards.

    Senior Software Architect
    • Definition of an architecture to enable *on-premise* application execution on AWS cloud
    • Implementation of AWS infrastructure as code with Terraform
    • Application for managing the deployment of development, testing, demonstration, and production environments to clients

    Lead Developer
    • Implementation of the base framework for Angular and Dotnet Core applications and libraries, and the *design system* for Addactis Software's web products
    • Writing development standards to be applied to Angular projects
    • Technical lead for Angular

    🌐PO Predict

    *Collective insurance underwriting tool*
    • Application of necessary project transformations to ensure execution on AWS
    • Securing API access with JWT and role-based authorization management
    • Implementation of a *single sign-on* system that allows project integration with an identity provider configurable via AWS Cognito

    🌐Addactis Platform

    *Web application for managing and planning actuarial data processing*
    • Initial project design and implementation: *Single Page Application* and *REST API*
    • Management of actuarial resources: models, data preparation, and processing executed outside the platform
    • Generic designer of actuarial solutions in graph form
    • Connections to decentralized processing tools for the execution of modeling and data processing components of an actuarial solution
    • Historical logging of all component executions within an actuarial solution
    • Coordination of stakeholder collaboration through a system of groups, roles, and permissions

    🌐Addactis Intuition

    *Web application for visualizing actuarial data*
    • Performance optimization
    • Project architecture refactoring
    • Graphical analysis and scenario comparison system
    • *Single Page Application* and *REST API*

    🌐Extranet
    • Online training platform for Addactis software
    • Provision of documentation and Addactis software
    TypeScript Angular C# .NET AWS Terraform Docker NPM Git Bootstrap Gitlab CI/CD SQL PostgreSQL SASS HTML5 CSS3 PHP Laravel Software Craftsmanship TDD DevOps Clean Code Clean Architecture Cloud Engineer Web Development Full-stack Development Front-End Development Back-End Development Scrum Agile Methodology
  • Thunder Arrow
    Fullstack Engineer
    DIGITAL AND IT
    November 2014 - January 2018 (3 years and 2 months)
    Lyon, France
    *Thunder Arrow* is a company specializing in the development of custom web solutions with the ambition to focus on the business value of entrusted projects.


    Entrepreneurship
    • Co-founder of Thunder Arrow
    • Creation of the brand image and visual identity

    Library Development
    • For rapid project implementation by automating low-value tasks
    • Over 40 modules and extensions for Laravel
    • Over 20 modules for Angular

    🌐Origamli
    • Custom packaging configuration
    • 3D visualization of the packaging project
    • Online ordering and purchasing

    🌐Reader game editor
    • Application for creating and editing digital "choose your own adventure" books
    • Application for reading digital "choose your own adventure" books

    🌐Menuze
    • Project presentation website
    • Mobile application for translating restaurant menus

    🌐OEM
    • Mobile application for configuring electronic devices with a Bluetooth Low Energy antenna

    🌐PWYP
    • Mobile application for managing discount coupons for individuals
    • Mobile payment application for merchants
    • Website for managing the deployment of the system to merchants and analyzing usage statistics
    PHP Laravel Angular TypeScript JavaScript Bootstrap SASS HTML5 CSS3 SQL NPM Webpack Git Clean Code Web Development Full-stack Development Front-End Development Back-End Development

Reviews

5.0

Out of 7 ratings

F

Ferdinand

Product Manager - Sept x lot 1 ISN

Reviewed on 6/4/2026

F

Ferdinand

Product Manager - France Numérique Ensemble

Reviewed on 6/3/2026

Recommendations

Gilles AutinGA
Romain CambonieRC
Gilles Autin and 1 other person have recommended Marc

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Education

  • General Engineer in Computer Science and Digital Technologies
    EFREI Paris
    2014
    Ingénierie informatique - Majeure intelligence numérique et réalité virtuelle. EFREI Paris : l'école d'ingénieurs de l'information et des technologies numériques est une école d'ingénieur privée. Son domaine d'étude se situe autour des technologies numériques : informatique et télécommunications. Le diplôme de l'EFREI confère un titre d'ingénieur accrédité par la commission nationale pour l'accréditation des diplômes d'ingénieur depuis 1957. Le diplôme est équivalent à une maîtrise dans l'espace européen de l'enseignement supérieur.
  • Semester abroad
    Asia Pacific University of Technology and Innovation (APU / APIIT)
    2011
    Ce séjour scolaire en Malaisie constitue une expérience riche et unique lors de laquelle j'ai pu développer mes compétences en anglais et apprendre à évoluer dans un nouveau système académique et dans un nouvel environnement culturel.

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