About Ryad Lotfi
French
Native or bilingual
Experience
- Worklife (Groupe Crédit Agricole)Lead Data EngineerBANKING AND INSURANCEMarch 2026 - Today (4 months)Paris, France
- Took ownership of the entire data stack, leading data engineering initiatives end-to-end
across architecture, orchestration, transformation, deployment, and analytics delivery.- Led the full migration of the Data Warehouse from PostgreSQL to ClickHouse, driving the
project independently from technical assessment and design to implementation andproduction rollout.- Evaluated costs, trade-offs, and performance implications of the new architecture, and
delivered a production-ready platform that reduced dashboard loading time from 5 minutesto 5 seconds- Re-engineered several critical data workflows to improve reliability and maintainability,
introducing unit and integration tests across transformation pipelines.- Built and industrialized data models with dbt, orchestrated pipelines with Airflow, and
supported deployment processes in Kubernetes-based environments.- Revived the usage reporting project, which had been blocked for 3 years due to reliability
issues, by defining and executing a robust delivery strategy leveraging ClickHousecapabilities. - ARISTID Retail TechnologyData EngineerJune 2024 - Today (2 years and 1 month)Paris, France- Designed and built multi-tenant REST APIs (FastAPI/Python) handling bulk data ingestion and search across MongoDB and PostgreSQL for major retail clients (Auchan, Carrefour, Maxeda, BUT)- Architected a data pipeline platform from end-to-end with Apache Airflow orchestrating 10+ ETL workflows processing diverse data sources (SFTP, APIs, CloudFlare, SAP)- Implemented event-driven architecture using RabbitMQ for real-time asynchronous data processing across multiple client environments- Integrated Apache Spark for large-scale data processing, optimizing execution times for high-volume SDO counter computations- Built a multi-client CI/CD system on GitLab enabling on-demand per-client deployments with automated credential generation and infrastructure provisioning- Developed a monitoring platform for Airflow, APIs, and RabbitMQ with Microsoft Teams alerting- Managed database infrastructure: PgBouncer connection pooling, PostgreSQL stored procedures, MongoDB aggregation framework and transactions optimization- Containerized all services with Docker and managed environments from development to production- Built and maintained an internal Python library (arislib) providing unified connectors for MongoDB, PostgreSQL, S3, Elasticsearch, and SFTP- Led international client integrations: Maxeda (Netherlands - Syndigo/SAP), Rona (Canada), and major French retailers
- NHOODData EngineerJanuary 2023 - June 2024 (1 year and 5 months)Lille, France- Establishment of interface contracts to meet various business requirements;- Development of data flows on Azure Data Factory and Azure Databricks to migrate data from +10 subsidiaries worldwide (Luxembourg, Spain, Portugal, etc.).- Participation in the implementation of the Agile methodology;- Initiation of a git repository on AzureDevops and establishment of best practices for branch and code management;- Added CI/CD pipelines in Azure Devops to the project to test, build, and lint each pull request,- Data retrieval from multiple sources: Oracle DB, MySql, Web Scraping, etc.- Data storage on Azure Data Lake Gen 2 ;- Massive data processing using Pyspark and SparkSql on Azure Databricks;- Stream scheduling using VTOM ;- Code Review ;- Handling of production incidents
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Education
- Master of ScienceUniversité de Paris2022Master, Data science
- Master 2 (M2), Computer visionUniversité Pierre et Marie Curie2021Master 2 (M2), Computer vision