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Hermann-Jude RencontreHR

Hermann-Jude Rencontre

Fullstack Web Developer - Java | React | DevOps

€450/day
Paris, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Hermann-Jude

Fullstack Java/Kotlin & React Developer | Technical Excellence & Clean Code

With 5 years of experience in software engineering, including 3 years dedicated to Java/Kotlin (Spring Boot) and React (TypeScript), I design high-performing, scalable, and maintainable applications for the most demanding companies.

I combine technical expertise (Clean Code) with agile methodologies (Scrum/Kanban) to build sustainable architectures.

Possible joint achievements:

  • Solid & Scalable Backend:Creation of high-performing REST APIs (Spring Boot, Nest.Js/Express) and modular architectures (hexagonal).
  • Advanced & Maintainable Frontend:Design of impeccably precise React interfaces (TypeScript), implementation of Design Systems and reusable component libraries.
  • Integrated QA & DevOps Culture:Automation of deployments, implementation of comprehensive testing strategies (Unit, Integration, E2E with Cypress/Gherkin) and optimization of CI/CD pipelines (Docker).
  • Autonomy & Automation:Integration of headless CMS (Strapi) and workflow automation.

Benefits of our collaboration:My passion for technology drives me to constantly experiment with my personal server infrastructure. This gives me a deep mastery of the DevOps chain, as well as containerization technologies.

Whether your project involves launching a new product, redesigning an existing architecture, or strengthening your testing processes, my expertise is at your disposal.

I am available for remote work or in Paris. My English proficiency is C1 level.

Let's discuss your project!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Lille (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Nantes (up to 50km)

Experience

  • Société Générale
    Software Engineer
    BANKING AND INSURANCE
    September 2024 - September 2025 (1 year)
    Paris, France
    Design and development of a library of about fifteen reusable React components. Solution adopted by several cross-functional projects, ensuring graphical consistency and reducing team delivery time. Design and implementation of an End-to-End (E2E) test suite with Cypress and Gherkin (BDD approach) covering three interdependent applications, ensuring non-regression on critical business flows. Full integration of these E2E tests within continuous integration (CI/CD) pipelines to automate validation before deployment. Development of a local installation and configuration script to simplify the daily work of QA teams and streamline acceptance phases.
    React.js Typescript Java Spring boot Cypress
  • AIOS SH
    Fullstack Developer
    DIGITAL AND IT
    September 2023 - August 2024 (11 months)
    Paris, France
    As a Fullstack Developer within an IT Consulting Company (ESN) specializing in the banking sector, I participated in a mission focused on technical modernization. This mission included large-scale projects such as architecture redesign, test automation, and integration of content management solutions, aiming to optimize banking systems' processes and performance.
    Typescript DevOps Java Spring boot React.js
  • Opéra national de Paris
    HRIS Developer
    CULTURE
    September 2020 - August 2023 (2 years and 11 months)
    Paris, France
    Development of PowerShell and NGscript scripts (Pléiades software by Sopra Steria) to automate recurring tasks and optimize workflows.
    Design of VBA/Excel tools for integrating working hours of artists paid per production, reducing manual workload.
    VBA Microsoft Excel Pléiades

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Education

  • Master
    MyDigitalSchool
    2025
    Master
  • Licence — Concepteur Développeur d'Applications
    CFA INSTA
    2023
    Licence — Concepteur Développeur d'Applications

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