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Athmane H.AH

Athmane H.

Experienced Java Developer | Spring Boot | Spring Batch

€500/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Athmane

Java developer with 5 years of experience, I design high-performing, robust, and maintainable backend solutions.

My expertise is built on a modern stack: Spring Boot, Spring Batch, and Kafka, with a focus on data processing, microservices-oriented architectures, and real-time data pipelines.

I have participated in several projects in demanding contexts (banking, telecom, or data-driven sectors), notably on:
• Refactoring legacy applications into Spring Boot microservices
• Implementing massive batch processing with Spring Batch
• Integrating Kafka for real-time data stream management

Technical Skills:
• Java 8/11/17, Spring Boot, Spring Batch, Spring Cloud
• Kafka (producer/consumer, configuration, tuning)
• Secure REST APIs
• Microservices, Docker, CI/CD (Jenkins/Gitlab)
• Agile methodologies

What I offer:
• Development or refactoring of modern backend architectures
• Design of robust and high-performing Kafka pipelines
• Processing of large data volumes (batch + streaming)
• Technical coaching for teams (code reviews, best practices)

I am available for remote or hybrid work depending on your location.
Feel free to contact me to discuss your needs or mission.
  • French

    Native or bilingual

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

Experience

  • CGI
    Java Consultant
    DIGITAL AND IT
    November 2020 - Today (5 years and 7 months)
    Puteaux, France
    Assignment as a Java consultant within a major public sector client, on several projects with high technical and regulatory stakes (international visibility). I contributed to the design and development of robust and scalable solutions by leveraging the Spring ecosystem, particularly Spring Batch and Spring Integration, for processing large data volumes and orchestrating complex flows.

    My role also involved implementing high-performance REST services, implementing reactive programming, and managing code quality with a DevOps and industrialized approach via Maven.

    Tasks performed:

    • Development of massive batch processing with Spring Batch
    • Data flow integration via Spring Integration
    • Migration of Spring applications to Spring Boot
    • Design and exposure of REST APIs (OpenAPI)
    • Use of reactive programming to improve performance and scalability
    • Optimization and industrialization of builds with Maven
    Stack used:
    Java 11 and 17, Spring Boot, Spring Batch, Spring Integration, WebFlux, Maven, Git, REST APIs, Docker, PostgreSQL, Kafka, kubernetes, OpenAPI,
    Java Spring Boot Spring Batch Spring Integration PostgreSQL Continuous Improvement Performance Improvement Shell Script Lombok puppet JUnit Cucumber Apache Kafka Kubernetes Argo CD Argo Workflow
  • Graphcom
    Full-stack Node.js Developer
    SOFTWARE PUBLISHING
    September 2019 - August 2020 (1 year)
    Levallois-Perret, France
    As a full-stack developer, I was responsible for the complete development of several features, on the backend with Node.js (Express.js) and on the mobile side with React Native. My role involved both design and technical implementation.
    I also worked on modeling and optimizing the MySQL database, implementing complex queries.

    Tasks performed:
    • Design and development of secure REST APIs with Node.js
    • Cross-platform mobile development with React Native
    • Relational database management under MySQL (structuring, optimizations, migrations)
    • Agile collaboration (Scrum) with Git, Jira

    Stack used:
    Node.js, Express.js, React Native, MySQL, Git, Postman.
    Node.js HTML5 CSS3 MySQL Jira Express React Native
  • signactif
    Node.js Developer
    SOFTWARE PUBLISHING
    March 2018 - December 2018 (10 months)
    Paris, France
    Context: Development of a dynamic display application driven by visitor traffic.
    • Development in AngularJs enabling dynamic display on screens deployed at trade shows and events.
    • Development in NodeJs enabling the collection of data from sensors installed at trade shows and events.
    • Development of features on the application's back-office interface.
    • Code review.
    • Continuous integration via GitLab.
    Node.js AngularJS HTML5 CSS3 Web Integration Responsive Design MangoDB

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Education

  • Computer Engineering
    Esiea
    2022
  • Professional Bachelor's Degree in Computer Science
    Université Paris 13
    2020

Skill set

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