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Ahmed FejjiAF

Ahmed Fejji

Senior Java Developer

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ahmed

Senior Java JEE developer for 7 years, I have participated in the development of numerous web applications for major clients (Société Général, Crédit Agricole, DisneylandParis, etc.
I have excellent mastery of backend technologies (Spring, Hibernate, webService, database, etc.) and a good knowledge of AWS services.

Autonomous and with excellent interpersonal skills
  • English

    Fluent

  • French

    Native or bilingual

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

Experience

  • Société Générale
    Senior développeur java JEE
    April 2023 - Today (3 years and 2 months)
     Tâches :
    • Participation à la conception technique de la nouvelle architecture orientée événements basée sur Kafka.
    • Développement de l'API de publication Kafka, permettant aux publishers de pousser les données vers la plateforme d'échange.
    • Mise en place du module KafkaNotifier, un composant applicatif chargé d'intercepter les messages JSON, de les transformer en XML et de les distribuer aux clients consommateurs.
    • Conception et mise en place d'un système de publication multithreadé dans Kafka afin d'optimiser la performance et la scalabilité des flux.
    • Réalisation des tests unitaires et d'intégration avec JUnit 5 et Mockito.
    • Déploiement automatisé des composants via Jenkins et supervision des pipelines CI/CD.
    • Refactorisation et optimisation des flux existants pour améliorer la résilience et réduire la latence.
    • Rédaction de la documentation technique et des schémas d'échange.
    • Revue de code, validation des pull requests et accompagnement technique des développeurs juniors.
    • Participation active aux cérémonies Agile (Daily, Sprint Review, Retrospective).
  • Disneyland
    Senior développeur java JEE
    May 2022 - January 2023 (8 months)
    Paris, France
    Content Api Le projet content api est une application backend qui gère le contenu du site web DisneylandParis.com (des libellés, des images, des liens …etc.) via l'interrogation de ElasticSearch avec des requête graphQl. ✓ Tâche :
    •Développement des nouvelles fonctionnalités.
  • Disneyland Paris
    Senior Java JEE Developer (Back end)
    May 2022 - Today (4 years and 1 month)
    ❖ Function: Senior Java JEE developer (Back end)
    ➢Project: Content Api The content api project is a backend application that manages the content of the DisneylandParis.com website (labels, images, links, etc.) via querying ElasticSearch with graphQl queries. ✓ Task:
    • Development of new features.
    • Perform performance work on graphql queries
    • Performing unit tests with Junit 5
    ➢Project: Content batch This project contains several batches, these batches are responsible for feeding the ElasticSearch database with data (ticket prices, hotel prices, attraction waiting times, attraction availability, etc. …) ✓ Task:
    • Development of new features.
    • Cutting and re-implementing the project into sub-batches
    • Performing unit tests with Junit 5
    ➢Project: AWS Migration As part of the migration to the AWS cloud, the team migrated the various technical components to the cloud as well as the databases and CMS ✓ Task:
    • Participation in the AWS migration study
    • Adapt the project configuration for the AWS environment
    • Set up S3 buckets to store the inputs and outputs of the batches ✓ Technical environment Java 11, springBoot, scala, play, ElasticSearch, DynamoDB, Tridion, SpringBatch, Web Service Rest, Junit5, Sonar, AWS, docker, Gitlab,T< ✓ Team 3 Developers, 1 techLead, 1 scrum master, 1PO

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Education

  • Engineering degree in Computer Science
    Higher Institute of Applied Sciences and Technology
    2016
    Diplôme d'ingénieur en Informatique
  • Preparatory cycle math physics computer science
    Higher Institute of Applied Sciences and Technology
    2013
    Cycle préparatoire math physique informatique

Skill set (12)

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