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Zakaria Abdelmoumen KermoucheZA

Zakaria Abdelmoumen Kermouche

Data Engineer | Teradata, ETL, Kafka, Spark, SQL

€350/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Zakaria Abdelmoumen

I help SMEs and startups build, fix, and scale reliable data systems. My goal: for your teams to have blind confidence in their data to make the right decisions.

I work on creating data pipelines, backend systems, and reporting foundations — from stabilizing existing ETL flows to creating new production solutions in Python and on the Cloud (GCP).

What I deliver concretely:

Robust and maintainable data pipelines (batch or near real-time).

High-performance backend processing systems in Python and SQL.

Optimization, monitoring, and troubleshooting of your existing databases (e.g., PostgreSQL).

Clear documentation and smooth skill transfer for your internal teams.

My work method:

Defined scope and realistic deadlines (systematic quotes and specifications).

Pragmatic, business-oriented solutions.

Regular communication and total transparency.

Immediately available for short-term missions (audits, pipeline unblocking) or part-time. Ideal for teams that need quick and reliable data reinforcement without committing to a long recruitment process.
  • French

    Native or bilingual

  • English

    Fluent

  • Arabic

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • Freelance
    Data / Python Consultant
    CONSULTING AND AUDITS
    August 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.
    Python PostgreSQL Big Data SQL
  • Djezzy OTA
    Data Engineer
    TELECOMMUNICATIONS
    August 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.
    Data Engineer ETL SQL Apache Kafka Informatica PowerCenter
  • NATIONAL GENDARMERIE R&D CENTRE
    Web & ML Developer (R&D)
    PUBLIC SAFETY
    September 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
    ETL Python Machine learning Dashboard Predictive analytics

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Education

  • Computer Science
    National School of Computer Science (ESI) Engineer's Degree
    2022
    Informatique

Certifications

Skill set

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