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Oussama ZargaOZ

Oussama Zarga

Supermalter

Tech Lead Fullstack / E-commerce / Headless / AI

€900/day
2 projects
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Oussama

As a software engineer, my passion for IT projects has taken shape over time. Thanks to my 15 years of previous professional experience and my various responsibilities within large companies, I have acquired a set of essential business and technical skills for the creation and implementation of e-commerce solutions (B2B, B2C, Marketplaces), Web applications, APIs, and complex systems.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • ACCOR
    Microservice Techlead, Nestjs lead developer
    HOSPITALITY
    October 2024 - Today (1 year and 8 months)
    Paris, France
    As Tech Lead and Senior Lead Developer for Accor Meetings & Events, a major player in hospitality and hotels, I participated in the initiation of a new strategic project by defining the microservices architecture and setting up the technical foundations of the platform.

    Within a medium-sized team, I designed and developed several services in Node.js and NestJS, adopting an event-oriented approach. I also ensured the design of robust APIs and the implementation of a search engine based on OpenSearch, guaranteeing the system's scalability and performance.
    NestJs Node.js Typescript Opensearch Microservices Architecture Amazon Web Services Redis AWS Kinesis API REST APIs GraphQL
  • OCP REPARTITION
    Mirakl Techlead
    PHARMACEUTICALS INDUSTRY
    January 2024 - August 2024 (7 months)
    Paris, France
    As Tech Lead and Senior Developer within a team for the client OCP, a leader in pharmaceutical distribution, I contributed to the design and development of the integration of a B2B marketplace into the existing application, using the Mirakl solution.

    I provided my technical expertise to ensure interoperability with internal systems, while guiding architectural choices and ensuring the implementation of high-performance search based on ElasticSearch.
    Mirakl PHP Node.js Typescript Elasticsearch Docker
  • ACCOR
    Lead of Headless Transformation
    HOSPITALITY
    February 2022 - Today (4 years and 4 months)
    Paris, France
    As part of the modernization of the AstoreShop Marketplace B2B solution, I am supporting the Accor technical team to ensure the transition from a Magento monolith to a microservices solution connected via a GraphQL API Gateway with a FrontEnd in React/NextJs built from scratch.
    My main role within a team of about ten developers is focused on improving the Backend system, Magento, to support GraphQL and develop new APIs for AtoreShop's business needs, and to develop the new PWA Next front from scratch by integrating the desired APIs and UX.
    In addition, I provide advice and assistance throughout the process; explain requirements as needed, offer support to developers and project managers as they become familiar with the API, and monitor the development of continuous integration.

    My mission consists of:

    Meeting business needs with technical solutions.
    Technical framing of the Backend and Frontend stacks.
    Proposing a roadmap for project execution and key features.
    Framing the FrontEnd technical architecture and implementing development guidelines; Challenging solutions, Development tools, Testing tools, Automation..
    Improving the Magento Backend stack to provide a GraphQL API.
    Developing Backend APIs.
    Integrating Frontend features.
    Leading knowledge transfer workshops from Back to Front API.
    Participating in the preparation of backlogs for each sprint.
    Documentation / Reporting / Meeting Minutes.
    QA: Realization of test specifications.
    Release monitoring.
    Developing a dual-run solution deployment strategy.
    Developing a solution Roll Out strategy across all countries.

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Education

  • Computer Engineering
    EPI Sousse
    2010

Certifications

Skill set

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