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Antoine MeltzheimAM

Antoine Meltzheim

Senior C# .Net Developer

€550/day
6 projects
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Antoine

Senior developer on Microsoft .Net C# technologies, I offer my expertise on a contract basis across the different technical layers of the framework, thin client (asp.net MVC, Web API, WCF) or thick client (WPF, WinForm).
  • Spanish

    Conversational

  • English

    Fluent

  • French

    Native or bilingual

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

Experience

  • Edenred
    Backend Software Engineer
    December 2022 - January 2024 (1 year and 1 month)
    Issy-les-Moulineaux, France
    In the context of virtual/physical card payment business (restaurant, gift cards, small treasury); participation in the evolution of user data access projects related to cards. Management of user access flows to codes and secrets. (Pin, CVC 2, activation code, personal data).
    - Evolutionary maintenance of confidential user data access workflows in compliance with GDPR.
    - Creation of encrypted gateways based on Open#Id#Connect standards for retrieving user data from a third-party service.
    - Strengthening hexagonal architecture principles in the solution and optimizing unit test coverage. (XUnit / NSubstitute / Fluent Assertions).
    - Decommissioning of Angular implementations in view components.
  • Xpollens
    .Net Development
    January 2021 - November 2022 (1 year and 10 months)
    Paris, France
    For the B2B banking solutions business without authorization (electronic money, card, and dematerialized payments), attached to the Accounts and Transactions team. Corrective and evolutionary maintenance of various solutions for managing electronic money transaction processes. Intervention at the end-of-chain application level. More specifically for managing components concerning the integrity of operations performed on accounts, ensuring the application of rules for limits, authorizations, ceilings, etc.
    - Participation in the development of transaction process redesign solutions.
    - Development of APIs responding to calls via http port or by receiving asynchronous messaging events with Azure Service Bus.
    - Corrective maintenance of legacy procedures for ensuring balance integrity.
    - New developments oriented towards DDD.
  • Groupe SeLoger
    API Proxy Management for iOS and Android Mobile Applications
    March 2019 - November 2021 (2 years and 8 months)
    Paris, France
    With the teams responsible for mobile applications, development and maintenance of the interface layer for iOS and Android devices with the various business microservices of the SeLoger group.
    - Migration of the solution from .Net to .Net core and redesign of the software architecture based on hexagonal principles.
    - Implementation of a solution for preventing data scraping between mobile clients and server-layer APIs.
    - Classic evolutionary maintenance, unit tests, bug resolutions.

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Education

  • Advanced Technician Certificate in Management Information Technology, Option Development and Mathematics.
    Saint Michel de Picpus
    2001
    BTS Informatique de gestion, Option développement et mathématiques.

Skill set

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