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Marc GosselinMG

Marc Gosselin

Full-stack developer, C#, Angular, WPF

€700/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marc

Backend developer specializing in .NET and Azure, I work on projects requiring robustness, performance, and reliability.

I support teams on:

  • Development of APIs and microservices in C#

  • Azure cloud architectures
  • Messaging systems (Azure Service Bus, RabbitMQ)
  • Infrastructure automation with Terraform
  • CI/CD pipelines Azure DevOps
  • Software quality and automated tests

I am used to working on:

  • Complete developments
  • Technical audits
  • Complex bug fixes
  • Performance optimizations
  • Production issues

Available for one-off missions or longer collaborations.
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Fluent

  • Italian

    Fluent

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

Experience

  • STIME
    Senior Developer
    RETAIL (SMALL BUSINESS)
    September 2025 - Today (11 months)
    Châtillon, France
    Within the order management squad, I work on the maintenance and extraction of features from the legacy repository.
    The legacy is in aspnet mvc net framework, the migration targets net10.
    While working on this modernization, the legacy must be maintained for operational continuity.
    SQL C# Grafana RabbitMQ REST API
  • Lacoste
    Tech Lead Integration Team
    LUXURY GOODS
    October 2024 - August 2025 (10 months)
    Paris 16 Passy, France
    Tech lead of the integration team, I first worked closely with OPS to set up the infrastructure foundation of the new Azure subscription. This setup was done using Terraform files.
    I then, in addition to assisting and supporting other developers, participated in the deployment of Azure Functions for synchronizing the PIM from Lacoste products.
    Azure Service Bus Azure Functions Azure DevOps C# Terraform
  • Betclic Group
    Senior Developer
    ENTERTAINMENT AND LEISURE
    May 2023 - September 2024 (1 year and 4 months)
    Bordeaux, France
    Within the integration team, I participated in the offer transformation project.
    Integration of quotes from suppliers and formatting them for Betclic before propagation within the Betclic IS.
    These integrations are done through .NET APIs communicating via HTTP or Kafka, depending on the targets.
    C# Docker MongoDB Apache Kafka xUnit

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Education

  • Engineer, Computer Science
    ESIEE-Amiens
    2008
    Ingénieur, Informatique

Skill set

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