About Zakaria Abdelmoumen
J'aide les PME et startups à construire, réparer et scaler des systèmes de données fiables. Mon objectif : que vos équipes puissent avoir une confiance aveugle en leurs données pour prendre les bonnes décisions.
J'interviens sur la création de pipelines de données, les systèmes backend et les fondations de reporting — de la stabilisation de flux ETL existants jusqu'à la création de nouvelles solutions de production en Python et sur le Cloud (GCP).
Ce que je livre concrètement :
Des pipelines de données robustes et maintenables (batch ou quasi-temps réel).
Des systèmes de traitement backend performants sous Python et SQL.
L'optimisation, le monitoring et le troubleshooting de vos bases de données existantes (ex: PostgreSQL).
Une documentation claire et un transfert de compétences fluide pour vos équipes internes.
Ma méthode de travail :
Scope défini et délais réalistes (devis et cahier des charges systématiques).
Solutions pragmatiques orientées "business".
Communication régulière et transparence totale.
Disponible immédiatement pour des missions courtes (audit, déblocage de pipelines) ou à temps partiel. Idéal pour les équipes qui ont besoin d'un renfort data rapide et fiable sans s'engager dans un long processus de recrutement.
French
Native or bilingual
English
Fluent
Arabic
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- FreelanceData / Python ConsultantCONSULTING AND AUDITSAugust 2025 - February 2026 (6 months)Brussels, Belgium
- Designed and delivered Python-based data solutions to automate business processes, extract data, and support reporting workflows.
- Developed backend components and data processing scripts with a focus on reliability, scalability, and maintainability.
- Optimized PostgreSQL databases through query tuning, indexing strategies, and performance improvements to support increasing data volumes.
- Worked closely with stakeholders to translate business requirements into technical solutions and deliver documented handovers.
- Djezzy OTAData EngineerTELECOMMUNICATIONSAugust 2022 - July 2025 (2 years and 11 months)Algiers [El Djazaïr], Algeria
- Designed, developed, and maintained enterprise-grade data pipelines and ETL workflows processing millions of telecom records daily.
- Built and optimized data integration workflows using Informatica PowerCenter, Informatica Data Quality (IDQ), SQL, and Teradata for enterprise Data Warehouse environments.
- Implemented data ingestion and processing workflows using Apache NiFi, with monitoring, troubleshooting, and operational reliability improvements.
- Worked with Big Data ecosystems including Hadoop, Hive, Spark, and Kafka for large-scale data processing and distributed architectures.
- Developed batch and near-real-time data pipelines, including scheduled production jobs, data validation, reconciliation, and error handling.
- Worked with relational and distributed databases including Teradata, PostgreSQL, and Cassandra depending on workload requirements.
- Contributed to data governance initiatives using Informatica Axon and data quality processes to improve data consistency and trust.
- Optimized SQL queries and processing workflows, reducing pipeline execution time by approximately 40%.
- Automated operational tasks using SQL and scripting, reducing manual intervention and improving data reliability.
- NATIONAL GENDARMERIE R&D CENTREWeb & ML Developer (R&D)PUBLIC SAFETYSeptember 2021 - June 2022 (9 months)Algiers [El Djazaïr], Algeria
- Developed data-driven applications combining backend development, data processing, and machine learning components.
- Built Python-based services and integrated ML models into operational applications.
- Designed dashboards and analytical tools to support decision-making processes.
- Collaborated with technical and non-technical teams to deliver prototypes with clear documentation
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Education
- InformatiqueEcole nationale Superieure d'Informatique (ESI) Diplôme d'ingénieur2022Informatique
Certifications
- Google Data AnalyticsGoogle2024