Thomas COEUGNET

Full Stack Developer

 

About

I have 7 years of experience in .NET and SQL development. I have a particular affinity for server technologies and DevOps practices.

I am constantly challenging myself and keeping up to date with new techniques and best practices.

I value a thoughtful and quality-oriented approach, aligned with deadlines and budgets.

Experiences

Back-end Software Developer

Fronius France / Annecy / 2022 - Present

I joined Fronius France’s R&D center to design, develop, and deploy the energy management solution for Fronius inverters. Supporting this main functionality, I also initiated other microservices that integrate into a distributed and constrained ecosystem. To fulfill my role, I had to communicate daily in English with my Austrian colleagues through messages, video calls, and demos.

| Energy Flow Management | 2022 - Present |     |

Within a team of three developers, we started from scratch with the goal of deploying a cloud-based energy management solution. My responsibility was to design, develop, test, and deploy the back-end part of this system, ensuring scalability, resilience, and security.

    | Tariff Management API | 2022 - Present |     |

    To enable management of flexible energy tariffs (essential for optimizing energy management), I developed a REST API dedicated to this task. Designed from the start to handle high traffic, with low latency, and with an emphasis on optimizing infrastructure costs.

    Across both projects, I gained experience with the following technologies and practices:

    • REST API built with C# / .NET 6 (later .NET 8)
    • Infrastructure as Code using Azure Bicep
    • Use of Domain Driven Design within a modular monolith
    • Implementation of distributed patterns (outbox message, producer-consumer, ...)
    • Load testing using NBomber and OctoPerf
    • Monitoring with OpenTelemetry, Prometheus, and ElasticSearch
    • Cloud budget management and monitoring

    Thomas COEUGNET

    Full Stack Developer

     

    Experiences

    Full Stack Developer

    L'Opcommerce / Lille / 2016 - 2022

    Within a team of about fifteen developers and product owners, I successively worked as a T-SQL developer, web developer, and then full stack developer on projects involving member and partner portals, APIs, and infrastructure/DevOps. Here are my most significant projects.

    | CFA API | 2021 |   |

    Design and development of an API for transmitting CERFA forms, invoices, and documents. Led inter-OPCO working groups and made technical proposals. After 3 months, 80+ training centers were using this API, with a total of over 3,000 invoices received.

    • API built with C# / .NET 6
    • SonarQube used to assess code quality
    • Azure DevOps for continuous integration and deployment
    • ElasticSearch / Kibana for log storage and monitoring
    | Apprenticeship Contract Component | 2018 | 4 mois |     |

    Creation of a CERFA data entry interface integrated into the Opcommerce legacy portals. After 3.5 years of use, 180,000+ CERFA forms submitted.

    • Frontend built with Angular 7
    • Backend API in C# / .NET 6
    | CRM Redesign | 2017 | 5 mois |     |

    Redesign of the stored procedures used in the in-house CRM, data migration, and implementation of an advanced search feature (Full Text Search).

    • Stored procedures in T-SQL (SQL Server 2012)
    • SQL Server Integration Services