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Younes BoulaaynineYB

Younes Boulaaynine

Full Stack Developer Java / Angular / KAFKA /AWS

€650/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Younes

Senior Full Stack Java JEE / Angular Developer with 13 years of experience. I specialize in the design and development of distributed and critical systems, particularly in environments subject to high performance and resilience constraints (Payment, Finance, Telco).

Technical and Methodological Expertise
My expertise covers the entire development lifecycle:
Core Back-end: Advanced mastery of Java 17/21, Spring Boot, and Microservices architectures.
Critical Systems/Event-Driven: Essential experience with Event-Driven Architecture (EDA) and Apache Kafka technologies to ensure platform scalability and responsiveness. I have managed synchronous and asynchronous flows for thousands of transactions per second.
Front-end: Proven skills in Angular 19.
DevOps & Quality: Proficient with CI/CD tools (Jenkins, Docker, Gitlab, Sonar), relational and NoSQL databases (MongoDB, Oracle), and the AWS Cloud environment.
Methodology: Regular work in Agile environments (Scrum, SAFe).

Key Experiences and Achievements
I am comfortable taking on large-scale missions, from technical study to production deployment:
Platform Optimization: Contribution to the improvement of offer management and billing platforms (Groupe ADP / Hubone).
Payment/Finance: Evolution and maintenance of critical payment micro-services, requiring maximum optimization of code and event management (PARTECIS).

Mentoring: Experience in mentoring and training new developers, and in ensuring adherence to best practices (code review, SOLID principles).

I am available for missions requiring in-depth technical expertise, strong autonomy, and great rigor.
  • French

    Native or bilingual

  • English

    Fluent

  • Arabic

    Native or bilingual

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

Experience

  • ADP
    SENIOR TECHNICAL CONSULTANT JAVA JEE /ANGULAR
    TELECOMMUNICATIONS
    April 2024 - September 2025 (1 year and 5 months)
    Tremblay-en-France, France
    Improvement and optimization of the offer management and billing platform for subscribers, based on a microservices architecture.
    Key Technologies:

    Backend: Java 17/21 / Spring Boot
    Frontend: Angular 17
    Communication: Synchronous (Spring Feign Client) and asynchronous (Apache Kafka)
    Storage: MongoDB (transactional data) + Elasticsearch (search and indexing).
    Java JavaScript Angular 17 MongoDB Spring boot 3
  • VENTHONE
    SENIOR TECHNICAL CONSULTANT JAVA JEE /ANGULAR
    November 2020 - April 2024 (3 years and 5 months)
    Paris, France

    - Client PARTECIS (payment software editor for Natixis and BNP Paribas) Participate in the evolution and maintenance of several payment applications as a technical referent for the Java EE part, in an Agile/Scrum context. Distributed team between Toulouse, Paris, and Lyon.
    - Tasks: Participation in the analysis and estimation of new features. Development of new features, analysis and correction of customer feedback. Support for new joiners in technical aspects. Validation of other developers' pull requests and monitoring of development best practices. Participation in deployment preparation, environment management, and supervision.
    - Technical Environment: Java EE, Spring, Spring Boot, Angular 14, MongoDb, Git, Mockito, Jenkins, Sonar, Tibco, Docker, Kafka
  • POWERSAP
    SENIOR STUDIES AND DEVELOPMENT ENGINEER
    January 2020 - November 2020 (10 months)
    Toulouse, France

    - Client TISSEO (Toulouse and its region public transport network): Participation in the implementation of an order management system for clothing for internal staff.
    - Tasks: Participate in meetings with the client to track project progress and assess their needs. Participate in the design of the architecture and technical solutions. Carry out feature development. Analysis and correction of user feedback. Conduct user training.
    - Technical Environment: Java EE, Spring Boot, Angular 8, Bootstrap, Oracle, Intellij, Docker, Jenkins, Git.

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Education

  • Master of Computer Science
    University of Brittany Occidentale
    2012
    Master of Computer

Skill set (18)

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