Freelancer profile translated to English.
Back to original languageAbout Meziane
Experienced Backend Developer in Java / Kotlin, specializing in microservices and Kafka, with experience in scalable cloud architectures (GCP / Azure). Accustomed to agile environments and challenges of performance, quality, and MCO (Maintenance in Operational Condition). Mobile Lille – IDF – Remote.
French
Native or bilingual
English
Conversational
Can work on-site
Lille (up to 50km)
Experience
- CarrefourExpert Java / Spring / Scala DeveloperE-COMMERCEJanuary 2021 - Today (5 years and 5 months)Massy, France• Upgrade to Java 17 & 21, Kotlin, and Spring Boot 2.7 → 3.4• Design of secure APIs with JWT token management and addition of new features• Management of API traceability to improve log investigation• Implementation of data pipelines for complex stock management (business rules, projections, J+1/J-1 promotions)• Normalization and publication of events in Kafka• Optimization of Spark batch jobs and integration with BigQuery• Migration of CI from Jenkins → GitLab CI• Handling of critical vulnerabilities and implementation of feature flags• Close collaboration with infrastructure teams (LDAP, SSO, Cassandra, Kubernetes) Technical environment: Java 11 → 21, Kotlin, Spring Boot, Scala, SBT, Kafka, Spark, Cassandra, BigQuery, Bitbucket, GitLab CI, Docker, Kubernetes, Kibana, Grafana, Prometheus, Azkaban, Rundeck, Dynatrace.
- Golden EyesExpert Java EE / Spring DeveloperE-COMMERCEJanuary 2011 - January 2021 (10 years)Villeneuve-d'Ascq, France• Development of the CRM solution (loyalty, marketing campaign management, reporting)• Design and development of web services for customer onboarding, loyalty transactions, and real-time customer profiles• Writing service contracts and multi-brand integration• Automation of recurring operations (server provisioning, availability tests, and alerts)• Integration with IBM Watson and Captain Wallet• Operational maintenance and performance optimization in production. Technical environment: Java, Spring, Hibernate, JPA, SOAP, REST, Oracle, PostgreSQL, Elasticsearch, Jenkins, Bash scripting, Git, Docker, Agile Kanban
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Education
- Master2 SIADUniversity of Science and Technology of Lille2011Master2 SIAD
- Master1 Fundamental Computer Science (Master's Degree)University of Science and Technology of Lille2010Master1 Informatique fondamentale (Maîtrise)