Zakariae Hajjaj
Data Analyst | Python & SQL
Salaire / Taux journalier
Bruxelles, Belgique
Freelance
Peut venir sur site
Expertises
Langues
À propos
Introduction
Data Analyst with 3+ years of experience transforming financial data into actionable business insights at Infrabel. Expert in building automated reporting pipelines using Power BI, Python, SQL, and Big Data tools (Spark, Cloudera). Master's degree in Mathematics with strong statistical modeling background. Delivering clear visualizations and data-driven recommendations that bridge technical analysis and business strategy.
Expérience de travail
Data Analyst
Infrabel
août 2023 - Présent
3 ans 3 mois
– Data analysis and business insights generation for internal Finance stakeholders using Power BI, DAX, Python and SQL – Data exploration, preprocessing and statistical analysis on financial datasets – Development of analytical tools and automated reporting pipelines using Python and SQL – Translation of technical findings into clear visualizations and recommendations for non-technical stakeholders – Version control and structured documentation of data workflows (Git, DEV/TEST/PROD pipeline) – Exposure to Big Data tools including Spark and Cloudera (certified) and cloud environmentsTeacher of Mathematics
Assistant Mathematics
ULB
sept. 2025 - Présent
1 an 2 mois
– Assisting doctors with exercise sessions for 2 to 4 hours per week.
Formation
ULB
Master in Mathematics, Mathematics – Research Focus with Statistics Course
2020 - 2022
2 ans 1 mois
– Electives: Graduate Statistics, Regression model, survival analysis, survey method, Topics in mathematical Statistics, Imaging and Inverse Problem. – Electives: Differential Geometry 2, Lie groups and Lie Algebras, Riemannian Geometry and Symplectics Geometry
ULB
Bachelor in Mathematics, Mathematics
2016 - 2020
4 ans 1 mois
– Electives: Statistic 1 and 2, Probability 1 and 2 (whit stochastic process), Formal and numerical calculation, Numerical Analysis for Partial Derivate Equations, Differential Geometries.
La Retraite High School
Economical Sciences
2012 - 2016
4 ans 1 mois
– C.E.S.S. in Economical Sciences
Licences et certifications
Airflow Certification
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Analyzing with Data Warehouse
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Preparing with Cloudera Data Engineering
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Apache Spark Application Performance Tuning Workshop
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