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Cyril GrondinCG

Cyril Grondin

Lead Java Developer

€730/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Cyril

I am naturally rigorous and organized. I can adapt to any context by focusing on the quality of the various tasks entrusted to me. Customer satisfaction is a priority for me.
Constantly seeking technical challenges, I am not afraid of them.
I am used to delivering diagrams to better understand complex subjects. These serve as a starting point for organizing future tasks.
  • English

    Conversational

  • French

    Native or bilingual

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

Experience

  • Mediatransports
    Full-Stack Technical Lead
    TRANSPORTATION
    December 2022 - Today (3 years and 8 months)
    Boulogne-Billancourt, France
    Technical Lead within the IT department of Mediatransports, in charge of several functional areas of the business ERP. I support a development team in modernizing the information system, with a strong focus on architectural choices, development quality, and team skill development.

    Main achievements:
    • Technical leadership of several ERP modernization projects.
    • Progressive migration of the application to a modern Java stack (Spring, Quarkus) and Angular.
    • Design and implementation of a shared document generation platform, reusable by multiple applications.
    • Development of new back-end and front-end features.
    • Implementation and evolution of REST APIs.
    • Integration of Keycloak for authentication management.
    • Leading technical workshops and mentoring developers.
    • Code reviews, validation of Merge Requests, and dissemination of best practices.
    • Participation in workshops with business stakeholders to translate business needs into technical solutions.
    • Contribution to architectural decisions and continuous improvement of software quality.

    Technical environment:
    Java 21, Spring Boot, Spring Data, Spring Security, Quarkus, Angular, PostgreSQL, JPA/Hibernate, JOOQ, Liquibase, REST, Keycloak, Maven, GitLab, Jenkins, SonarQube, JUnit 5, Mockito, AWS, Jira.
    Technical Lead Java Angular PostgreSQL REST APIs
  • KLEE GROUP
    Full-Stack Technical Lead
    DIGITAL AND IT
    November 2018 - December 2022 (4 years and 1 month)
    Le Plessis-Robinson, France
    Java / Full-Stack Technical Lead – Klee Group (2018 – 2022)

    Technical Lead on several large-scale projects in the public and notary sectors, with a central role in application modernization, architecture definition, and support for development teams.

    Main achievements:
    • Technical leadership of several critical Java applications.
    • Progressive migration from a proprietary framework (Vertigo) to Spring and Angular.
    • Implementation of a Spring project template to standardize new developments.
    • Design of shared technical libraries used by several applications.
    • Development of back-end and front-end features.
    • Implementation of REST APIs and integration of external services.
    • Integration of Keycloak for authentication management.
    • Leading technical workshops, mentoring developers, and code reviews.
    • Participation in workshops with business stakeholders and preparation of deliverables.
    • Proof of Concepts (POCs) and technical studies (Android, model generation, development tools).

    Technical environment:
    Java 8, Spring Boot, Spring Security, Vertigo, Angular, Struts 2, PostgreSQL, JPA/Hibernate, Liquibase, REST API, Feign, Keycloak, Maven, GitLab, Jenkins, SonarQube, JUnit 5, Mockito, Tomcat, Jira.
    Java Technical Lead Struts 2 Software Architecture Application Migration
  • Hardis Group
    Lead Java Developer
    BANKING AND INSURANCE
    August 2018 - October 2018 (1 month)
    Paris, France
    Lead Java Developer – Hardis Group (2018)

    Mission carried out at Intériale as part of the operational maintenance of production environments and support for the evolution of an application undergoing modernization.

    Main achievements:

    Supervision and monitoring of production processes.
    Management and analysis of XML flows.
    Development of new features for a Java/Spring Boot application.
    Participation in the implementation of a modern architecture based on Spring.
    Analysis and resolution of production incidents.
    Collaboration with project teams to secure production deployments.

    Technical environment:
    Java 8, Spring Boot, JPA/Hibernate, Oracle, Maven, XML, SAX, Talend, Git.
    Talend Java XML Oracle Application Maintenance

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Education

  • Computer Science and Payment Systems Engineer
    ENSICAEN
    2008
    Formation générale sur la Monétique ainsi qu'en développement Informatique

Skill set

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