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RayelenGuesmi/README.md

Hi, I'm Rayelen GUESMI👋

Data Engineer Student @ SUPINFO Paris · I build end-to-end data pipelines — from ingestion to monitoring — using production-grade tools.

📍 Paris, France · 🌐 Portfolio · 📬 LinkedIn

🛠️ Tech Stack

Orchestration & Pipelines

Dagster Apache NiFi Apache Airflow

Databases & Processing

PostgreSQL dbt Apache Spark SQL

Languages & Libraries

Python pandas SQLAlchemy

Infrastructure & DevOps

Docker GitHub Actions

Monitoring & Visualization

Prometheus Grafana Power BI

📌 Featured Projects

Weather Pipeline — Dagster + Docker + Monitoring

Full ETL/ELT pipeline ingesting hourly temperatures for Paris via the open-meteo API.
Goal: automate weather data ingestion, store it in PostgreSQL, and monitor the pipeline in real time.
Dagster · PostgreSQL · Docker multi-stage · Prometheus · Grafana · pytest (7 tests)

✅ Event-driven sensor · Daily partitions · Real-time monitoring

E-commerce Pipeline — GDPR & Visualization

End-to-end data pipeline with full GDPR anonymization on 1,000 customer transactions.
Goal: clean and anonymize e-commerce data, detect anomalies, and deliver a business dashboard.
Python · Apache NiFi · Power BI · IQR anomaly detection

✅ SHA-256 pseudonymization · 9 anomalies removed · 3-page dashboard · Total revenue: €2,526,440

NYC Taxi Pipeline — PySpark + dbt + Airflow

End-to-end pipeline on NYC Yellow Taxi data (Jan–Mar 2024) joined with weather data.
Goal: analyze the impact of weather conditions on taxi trips at scale.
PySpark · dbt · Airflow · MinIO · PostgreSQL · Docker

✅ 5 dbt models · 25 tests · 2 Airflow DAGs

Climate Dashboard — "France is Warming Up"

Analysis of 8.6 million Météo France records (1950–2024) across 8 departments.
Goal: visualize temperature trends in France over 74 years.
Python · PostgreSQL 15 · Metabase · Docker Compose

📫 Get in touch

Portfolio LinkedIn

💼 Open to internship or work-study opportunities in Data Engineering — available from September 2026

Pinned Loading

  1. pipeline-dagster-meteo-4DATA pipeline-dagster-meteo-4DATA Public

    End-to-end weather ETL/ELT pipeline with Dagster, PostgreSQL, Docker and real-time Grafana monitoring

    Python

  2. nyc_pipeline_4DDEV nyc_pipeline_4DDEV Public

    NYC Yellow Taxi end-to-end pipeline with PySpark, dbt, Airflow and MinIO on Docker

    Jupyter Notebook

  3. pipeline-ecommerce-rgpd pipeline-ecommerce-rgpd Public

    E-commerce data pipeline with GDPR anonymization, anomaly detection and Power BI dashboard

    Python 1

  4. meteo-france-visualization meteo-france-visualization Public

    Climate analytics dashboard on 8.6M Météo France records (1950–2024) with Metabase and Docker

    Python

  5. presidential-speeches-analysis presidential-speeches-analysis Public

    NLP pipeline on 58 US inaugural speeches (1789–2017) — sentiment analysis, topic modeling and text classification

    Jupyter Notebook