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Youssef AlahyaneYA

Youssef Alahyane

Senior Full-Stack Java Developer Architect

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Youssef

Senior Java/Angular Fullstack Developer & Technical Lead

With over 15 years of expertise, I design and develop complete web applications, from back-end architecture to dynamic user interfaces. My approach systematically integrates quality (unit tests, CI/CD) and commitment adherence.

My core business:

Back-End: Microservices and monolithic architectures with Java 8 to 21, Spring Boot/Cloud/MVC, Kafka, gRPC, and SOAP/REST web services.

Front-End: Modern interfaces with Angular, JSP, and jQuery.

Delivery & Quality: Maven/Gradle, Docker, Jenkins pipelines, testing (JUnit, Mockito), and version control (Git/SVN).

Collaboration: Team supervision, technical support, and fluid communication with business stakeholders for acceptance testing phases.

I am comfortable with the entire project lifecycle, from technical study to production deployment, ensuring robustness and maintainability.
  • French

    Native or bilingual

  • English

    Fluent

  • Arabic

    Native or bilingual

Can work on-site
Paris (up to 50km), Clermont-Ferrand (up to 20km)

Experience

  • Odigo
    Developer - Technical Lead
    November 2017 - June 2025 (7 years and 7 months)
    Paris, France
    - Gaia: Commercial management application driving the complete AVV opportunity cycle, from prospecting to invoicing, including customer, order, and financial milestone management.
    - Calypso: Solution for managing application deployment requests (new versions and numbers) on Interactive Voice Response (IVR) systems. The tool allows for "testing" voice applications and proactive monitoring of the voice fleet by grouping to optimize capacity and prevent overload.
    - Kairos: A unified platform for managing change requests, post-incident interventions, on-call scheduling, and associated payroll management.
    - CopWeb: Resource management application enabling individual and collective planning, project tracking, and team activity monitoring through unified dashboards.
    - ENUM - a centralized interface for provisioning and managing numbers on SR equipment, integrated with the routing system.
    - Service Directory: Application automating the connection/disconnection and portability of phone numbers, managing their lifecycle.

    Technical missions and responsibilities:
    • Study, design, development, and evolutionary/corrective maintenance of solutions.
    • Definition of application architecture (microservice and monolithic) and writing technical specifications.
    • Design and implementation of interfaces and data exchanges (REST, SOAP, FTP) with internal systems and external partners (ServiceNow, Remedy, Elasticsearch, regulators...).
    • Execution of unit, integration, and load tests to ensure application robustness.
    • Migration of databases from SQLServer to PostgreSQL and progressive migration of applications from Java 8 to Java 11 then Java 21.
    • Multi-environment deployment.
    • Technical support and supervision of development teams.
    Angular Spring Batch Spring Security Java Liquibase
  • MINISTERE DE TRANSITION ÉCOLOGIQUE - Direction des Affaires Maritimes
    Architect - Technical Lead
    July 2015 - September 2016 (1 year and 2 months)
    Saint-Malo, France
    AMFORE (Approvals, Modules, Training, Evaluations) support tools for all stakeholders involved in the implementation of the 2016 maritime training reform.
    • Definition of architecture and data model.
    • Management and supervision (5 developers).
    • Planning and costing.
    • Writing functional and technical specifications.
    • Mockup creation.
    • Development – Unit, integration, and security testing (OWASP).
    • Bug fixing.
    • Knowledge and best practice sharing.
    • Pre-production deployments.
    Spring Data JPA Spring MVC Spring Security Javascript / JQuery JSP/Servlet
  • MINISTERE DE TRANSITION ÉCOLOGIQUE - Direction des Affaires Maritimes
    Architect - Technical Lead
    July 2015 - September 2016 (1 year and 2 months)
    Saint-Malo, France
    Sailor Portal: A tool to assist in managing a sailor's career (Service lines, medical fitness, qualifications, and waivers).
    • Project monitoring.
    • Testing and qualification.
    • Support and technical solution proposals.
    • Knowledge and best practice sharing.
    • Pre-production deployments.
    JPA/Hibernate PostgreSQL JSTL JSP Javascript / JQuery

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Education

  • Master's in Software Computer Science.
    UBO
    2008
    Master2 Informatique de logiciel.
  • Master's in Software Computer Science.
    UBO
    2006
    Master1 Informatique de logiciel.

Skill set

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