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Ghassen BorgiGB

Ghassen Borgi

Expert Java/Spring Boot — Modernizing legacy

€530/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ghassen

I modernize critical Java applications in banking and insurance. Specifically: migrating Struts/JEE to Spring Boot, refactoring Hibernate, switching from Ant to Maven, breaking down monoliths into modular/microservices architectures.
10 years on projects where the challenge is not to write code from scratch, but to understand complex existing code (often poorly documented) before refactoring it without breaking production.
  • French

    Native or bilingual

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

Experience

  • AUXIA (MALAKOFF HUMANIS),
    Software Development Engineer
    May 2022 - Today (4 years and 1 month)
    • ● Backend development /
    • ● Design and implementation of OpenAPI RESTful APIs.
    • ● Migration of the Ant project to Maven
    • ● Migration of the Struts framework from 2.1.8 to including adaptation of the
    • ● from Log4j 1.2 to and Java
    • ● Corrective and business maintenance (AFN, Banking, Infocenter…).
    • ● Migration of stored procedures to GraphQL web services to expose contract and identity data, with query optimization and adherence to business rules (segmentation, dynamic criteria).
    • ● Optimization of batch processes and SQL queries to improve performance.
    • ● Writing technical documentation and supporting teams on new versions.
    • ● Participation in code reviews, unit and integration tests (JUnit, Mockito).
    • ● Implementation of the CI/CD chain under GitLab for build and deployment automation.
    • ● Implementation of Sentry in the Infocenter service for monitoring and centralizing application errors.
    • ● Integration of Graylog for collecting and analyzing application logs.
    • ● Collaboration with BI and functional teams to ensure consistency of inter-application flows.
    Java Spring boot Hibernate Gitlab CI/CD Struts
  • STET,
    JAVA/J2EE Developer
    October 2020 - April 2022 (1 year and 6 months)
    Context: Integrated into the QA team for the Instant Payment (IP) project: validation of instant transfer flows via STET (sending/receiving), regulatory controls, rejection management, end-to-end testing.
    Achievements:
    • • Evaluate and improve test automation tools,
    • • Develop test automation tools (Java, Scala, shell, selenium…),
    • • Populate test management and mapping tools (Jira),
    • • Participate in integration testing of technical and functional modules,
    • • Monitor, perform, and control test execution.
    Jenkins Selenium Amazon Web Services
  • ENEDIS,
    JAVA/J2EE Developer
    February 2018 - June 2019 (1 year and 4 months)
    Achievements:
    • • Development of APIs with Java 8, web services, Spring Boot 2.1,
    • • Development of business services with Java 8,
    • • Development of unit tests with Junit 5,
    • • Development of integration tests with Gherkin,
    • • Development of Solr queries,
    • • Implementation Spring Hateoas.
    Achievements:
    • • Implementation of microservices using Java 8, Spring Boot, and OpenShift,
    • • Development of unit tests with JUnit and Mockito,
    • • Corrective maintenance.
    • • Implementation of a dispatcher to read JMS messages and replicate them into two queues with Weblogic, EJB 3, and Java 6

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Education

  • Java EE 8 Web Services Developer
    2019
    Java EE 8 Web Services Developer
  • MongoDB Basics
    2019
    MongoDB Basics

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