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Youssef BelmahjoubYB

Youssef Belmahjoub

FullStack Developer Angular/NodeJs

€500/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Youssef

Freelance Full-Stack Developer specializing in Angular, Node.js, and TypeScript, with 5 years of experience in critical business applications.

I support companies on complex projects: scalable front-end architecture, robust APIs, performance improvements, legacy code refactoring, and structuring sustainable technical foundations.

Accustomed to demanding environments (large accounts, structured teams, high code quality), I work quickly and autonomously, whether to strengthen a team, secure a delivery, or modernize an existing stack.

I can work on:
• Advanced Angular Development
• Node.js API Design and Optimization
• State Management & Front-End Architecture
• Refactoring and Performance Improvement
• Clean Code & Best Practices

Available for remote or on-site missions (Paris).
  • French

    Native or bilingual

  • English

    Native or bilingual

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

Experience

  • l'Oréal Paris R&I
    FullStack Developer Angular/NodeJs
    November 2023 - Today (2 years and 7 months)
    Paris, France
    (NodeJS 22, Angular 19, Microsoft Azure, CosmosDB, Rest, RxJS, Angular Transform, NGRX, NPM, NVM, GIT, Gitflow, Jenkins, ServiceNow, Clean Code, confluence)
    Quickly took over a complex codebase following a migration, restoring critical features within the first month.
    Moved to the Build team: developed new features autonomously, from design to delivery.
    Direct contact with Key Users and international teams, functional scoping and in-depth business understanding.
    Implemented and optimized upload/download systems for Excel, PDF, and image files, etc.
    Created dashboards, graphs, and dynamic tables populated by imported data. Developed backend scripts connected to CosmosDB (NoSQL) and advanced use of Azure Functions + orchestrators.
    Actively participated in performance improvements: reduced loading times, refactored and cleaned code.
    Increased responsibility: took charge of sensitive features from A to Z, earning direct trust from the CIO's office.
    Regular code reviews, improved code quality, and promoted best practices (clean code, Sonar, tests). Worked in an agile methodology: managed tickets on ServiceNow, full ceremonies, documentation on Confluence.
    Contributed to CI/CD via Jenkins (deployment to testing, pre-production, production).
    Node.js Microsoft Azure Angular 19 CI/CD CosmosDB
  • Konexio
    Volunteer JS Trainer
    January 2025 - February 2025 (1 month)
    Paris, France
    Training underprivileged youth or career changers in Javascript and all front-end web tools: HTML, CSS.
  • Symolia technologies
    R&D Engineer Angular 15
    February 2023 - October 2023 (8 months)
    Paris, France
    Design and development of an enterprise-scale Angular portal for the automation of HR and training processes. Improved maintainability and code quality in a context.

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Education

  • Software Development Engineer
    National School of Applied Sciences
    2021
    Ingénieur en développement logiciel
  • Baccalaureate in Mathematical and Engineering Sciences
    Moulay Youssef High School
    2016
    Baccalauréat en Sciences Mathématiques et d'ingénieur

Skill set

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