Freelancer profile translated to English.
Back to original languageAbout Majdi
Senior Data Engineer with expertise in big data architecture, massive data processing, and cloud (Databricks, AWS, GCP). Experienced in high-volume projects, from designing batch & streaming pipelines to exposing data via APIs or dashboards.
I work on both technical and project aspects, with a constant focus on performance, security (GDPR), and cost optimization. Enthusiastic and curious, I stay constantly updated on cloud developments and DevOps/DataOps best practices.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- Secteur bancaireSr. Data Engineer / Agile Scrum Master / Data ArchitectBANKING AND INSURANCEJanuary 2026 - Today (7 months)Paris, FranceScrum Master / Agile Leadership:- Facilitating Agile ceremonies, PI planning, managing inter-team dependencies,- Cross-functional coordination and representing the team to stakeholders to secure execution and delivery commitments.POC and migration to Databricks:- Developing POCs, defining target architecture, and elaborating the migration plan to Databricks.
- AlchimieSr. Data Engineer / Data Project Manager / Data ArchitectFILM AND AVJanuary 2020 - November 2025 (5 years and 10 months)Paris, France**Environment**: Databricks, AWS (Glue, Lambda, S3, ECS, IAM, DynamoDB, API gateway), Terraform, GitLab CI/CD, PySpark, Delta Lake, Tableau, FastAPI, FalconAPI, Python, Spark
- Design of a complete GDPR-compliant architecture on AWS: encryption, access control, and cold archiving of sensitive data.
- Development and optimization of Databricks pipelines (PySpark, Delta Lake) for collecting, transforming, and making analytical datasets available.
- Implementation of a Modern Data Stack architecture (batch, streaming, real-time) for automated KPI generation and continuous reporting.
- Automation of cloud deployments with Terraform and GitLab CI/CD, ensuring IaC traceability and governance.
- On-premises migration → Databricks AWS: Spark refactoring, REST API integration, and infrastructure cost reduction.
- Development of data APIs and analytical dashboards (FastAPI, Tableau) for business performance consultation and monitoring.
- HappnBI & Data EngineerENTERTAINMENT AND LEISUREDecember 2018 - December 2019 (1 year)Paris, FranceDesign and maintenance of streaming pipelines with Java SDK Beam for real-time distributed processing.
- Development and orchestration of batch ETLs using Apache Airflow / Google Cloud Composer, with over 200 DAGs executed daily.
- Modeling and ensuring the reliability of data layers (DWH, Datamarts) in BigQuery: deduplication, cleaning, and analytical transformations.
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Education
- Computer Engineering DegreeESPRIT2016Diplôme d'Ingénieur en informatique
- Applied Degree in Computer Systems and SoftwareISI Ariana, Tunis2013Licence appliquée en système informatique et logiciel
Certifications
- AWS Certified Data Engineer – AssociateAmazon Web Services Training and Certification2025
- Databricks Certified Data Engineer ProfessionalDatabricks2025