About Hajar
Senior Data Engineer with 5+ years of experience designing and delivering large-scale data platforms. Specialized in Azure, Databricks, and Microsoft Fabric, with strong expertise in real-time data processing, pipeline optimization, and data governance.
I help organizations unlock value from their data by building scalable, reliable, and business-oriented solutions. Recognized for technical leadership and for bridging complex data engineering challenges with business needs.
French
Native or bilingual
English
Fluent
Can work on-site
Clermont-Ferrand (up to 50km)
Experience
- ErasteelSenior Data EngineerRAW MATERIALS INDUSTRYJune 2025 - October 2025 (4 months)Clermont-Ferrand, FranceManaged the company’s group-wide BI platform, ensuring reliable data flows, governance, and accessibility for all business teams- Designed and industrialized Azure Synapse pipelines to centralize and streamline data from multiple sources.- Implemented FinOps best practices to optimize cloud processing and storage costs across environments.- Automated CI/CD deployments and optimized Data Lake and Azure Functions to enhance performance and data governance.- Developed Power BI data models providing a unified view of production and performance indicators.
- Exakis-NeliteSenior Data EngineerCONSULTING AND AUDITSFebruary 2025 - May 2025 (3 months)Clermont-Ferrand, FranceStudied the design and implementation of a real-time data platform prototype, demonstrating the feasibility of ingesting, processing, and visualizing log data.- Built a POC with Microsoft Fabric for real-time data ingestion from IoT devices and log streams.- Integrated Eventstreams into Eventhouse for continuous, automated data processing.- Developed a real-time Power BI dashboard to monitor KPIs and support operational decision-making.
- MichelinLead Data EngineerAUTOMOBILEApril 2024 - February 2025 (10 months)Clermont-Ferrand, FranceLead the data engineering part within Michelin’s Corporate data lake team- Collected and transformed ADLS gen2 logs to identify data access and usage using Databricks and ADF- Optimized and improved the code performance within Databricks notebooks.- Studied and implemented new technologies such as Unity Catalog within Databricks.- Creation of PowerBI reports to highligh all the needed KPIs to facilitate data governance.
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Education
- Master of Science in Computer ScienceHarbin Institute of Technology2020Master in Computer Science
- Engineering degree in Business IntelligenceISIMA2020Engineering degree in Business Intelligence
Certifications
- Microsoft Certified : Fabric Analytics Engineer AssociateMicrosoft2024
- Microsoft Certified : Azure Data Engineer AssociateMicrosoft2022