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Joel AdjidanJA

Joel Adjidan

Senior Full Stack Developer

€560/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Joel

Senior Full Stack Java Angular developer with 7.5 years of experience working with technologies such as Java 8, Angular2+, Jenkins, Argile, Git, GitLab, Oracle, etc.
With Atos, Groupe BPCE, Société Générale, and Caisse des Dépôts in teams of 7 to 8 people of different nationalities, remotely and in person.
  • French

    Native or bilingual

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

Experience

  • HSBC
    IT CONSULTANT JAVA
    BANKING AND INSURANCE
    October 2022 - November 2025 (3 years)
    Courbevoie, France
    Project 1 – SEPA SDD CORE Engine – Java EE Engineer
    Development of a SEPA web services consumption engine (FRST, RCUR, OOFF, FNAL, R-transactions). Implementation of ReturnDD, RejectDD, RefundDD, Recall. Secure TLS 1.2/mTLS architecture, keystore/truststore. SOAP development + integration, JUnit/Mockito tests, SoapUI.
    Security & quality (SonarQube). CI/CD Jenkins, GitHub.
    Supervision: correlated logs, data masking, certificate monitoring. MCO support, incidents, rollback, skills transfer.

    Project 2 – EVPS BackOffice – Full Stack Java / Angular
    Spring Boot 2/Java 11 (API-First), REST security, error handling (ControllerAdvice), Spring Security, DTO validation. Front-end: Angular 18, RxJS, components, real-time integration. JPA/Hibernate persistence, SQL optimization. CI/CD Jenkins, SonarQube, local Docker. Responsive UI design (Bootstrap).
    Participation in scoping, analysis, documentation, code review, Agile rituals. Application performance optimization + DB tuning.

    Project 3 – SAM Module – Java 17 Microservices / Kafka
    Development/evolution of Spring Boot APIs in a microservices architecture.
    Kafka integration (producer/consumer, topics, monitoring).
    Resilience & performance optimization.
    Quality via SonarQube, JUnit/Spring Test tests. CI/CD Jenkins, GitHub. Supervision: logs, metrics, alerting. International collaboration (FR/PL/UK/IN) in Agile Scrum.

    Project 4 – fts-processor – Java/Python Batch – Kubernetes
    Evolution of a high-performance batch process (Spring Batch). REST APIs, code & SQL query optimization.
    Kafka integration, CI/CD Jenkins.
    Deployment on Kubernetes (pods, ConfigMaps, Secrets, Vault).
    Supervision & performance optimization. Python3 scripts for tooling.
    Work in an international Agile environment.
    Java Spring Boot Angular CI/CD Oracle PL/SQL Cloud Architect
  • Informatique CDC
    Senior Java / Angular Study and Development Engineer
    DIGITAL AND IT
    April 2021 - October 2022 (1 year and 6 months)
    Paris, France
    Project 1: Corrective and evolutionary maintenance of a web application for managing training organizations (Compte professionnelle de formation CPF).
    Role: Full Stack Angular, Java EE Study and Development Engineer
    Team size: 1 Project Manager - 1 Scrum Master - 4 Developers - 3 Testers
    Mission:
     Meeting and planning of the project pilot phase
     Development of new features on the advisor portal (Management of Elected Official Accounts, Invoice Management, etc.);
     Development of the presentation layer UI (Angular 11, Bootstrap3, css3)
     Exposure of REST services (RestFul, Hibernate, Spring MVC)
     Supervision of code quality for different modules via Sonar, reporting of alerts from SonaQube (technical and functional).
     Perform continuous integration with Gitlab / Git
     Deployment with Jenkins
     Perform unit tests with Mocha and JUnit
     Participation in Daily Meetings.
     Sprint review/poker planning/sprint retrospective/sprint planning
     Code review/Pair Programming
     Agile/Scrum Methodology

    Technical Environment: Java 11, Springs, JPa/ Hibernate, Angular 11, Tomcat 9, Bootstrap3, Maven, Git, JUnit, BitBucket, mocha, MySQL, SQL, Web Services, Postman, SonaQube, SpringData, IntellliJ, Jenkis, Scrum
    Java 8 Angular Oracle Database REST API Unit tests
  • Atos Worldline
    Study and Development Engineer
    BANKING AND INSURANCE
    August 2019 - July 2020 (1 year)
    Dakar, Senegal
    Project 1: Enrollment application for young French people (Missions Locales)
    Role: Full Stack Study and Development Engineer (Angular, Java EE)
    Team: 1 Project Manager, 1 Scrum Master, 15 Developers, 7 Testers, 1 Architect
    Mission: Corrective and evolutionary maintenance of a web application for enrolling young people with local missions.
    (Project similar to PPE)

    Project 2: Stakeholder management application
    Role: Full Stack Study and Development Engineer (Angular, Java EE)
    Team: 1 Project Manager, 1 Scrum Master, 8 Developers, 1 Tester, 1 Architect
    Responsibilities:

    Participation in planning meetings and pilot phase.
    Development of new features:

    Team barometer module, team planning.
    Authentication and security (Keycloak).

    UI design (Angular, Bootstrap 3, CSS3).
    Code quality supervision via SonarQube and alert reporting.
    REST service exposure (Spring Boot, Hibernate).
    Report generation (PDF, Excel) with JasperReports.
    Unit testing (Karma, JUnit).
    Deployment on AWS EC2 via Jenkins.
    Containerization with Docker.
    Database management with Liquibase.
    Participation in Agile/Scrum ceremonies (Daily, Sprint Planning, Review, Retrospective).

    Technical Environment:
    Java 8, Spring, JPA/Hibernate, Angular 4 & 8, Apache Tomcat 8, CSS3, Bootstrap 3, Docker, Java Mail, Maven, Git, GitLab, Karma, JUnit, MySQL, SQL, REST Web Services, Postman, SonarQube, Keycloak, Atom, Jira, Liquibase, AWS (EC2, RDS), Jenkins, Mattermost, Confluence, RabbitMQ, Spring Data, IntelliJ, Drools, Elasticsearch, NoSQL, GCP, Scrum.
    Java 11 Elasticsearch Java 8 Angular Jenkins/Sonar

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Education

  • Master 2 Computer Science, Software Engineering and Telecommunications
    Ipag School Paris
    2014

Skill set (9)

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