Hi! I'm Rayelen Guesmi — Based in Paris, France

Data Engineer &

I build reliable, end-to-end data pipelines — from raw ingestion to real-time monitoring — using production-grade tools.

Explore my work

About Me

I'm a Data Engineering student at SUPINFO Paris, currently pursuing a Master of Science (Bac+5), Data Engineering specialization (2025–2027). I have a solid background in software development and a strong passion for Data Science, Machine Learning and large-scale data processing.

My focus is on building reliable, end-to-end data pipelines — ETL/ELT, orchestration, data modeling and visualization. I care about clean architecture, proper testing, and making data actually usable.

I'm actively looking for a work-study contract for 2026–2027 in Data Engineering, available from September 2026.

Contact me

5

Data Engineering
Projects

8.4M

Rows Processed
with PySpark

25

dbt Tests
Passing

View My Work

Weather ETL/ELT Pipeline

End-to-end pipeline ingesting hourly Paris temperatures. ETL & ELT approaches, event-driven sensor, daily partitions and real-time Grafana monitoring.

Dagster PostgreSQL Docker Grafana

NYC Taxi Pipeline

Processes 8.4M Yellow Taxi trips joined with weather data. MinIO data lake, dbt modeling with 25 quality tests and 2 Airflow DAGs.

PySpark dbt Airflow MinIO

E-commerce GDPR Pipeline

Full pipeline with GDPR compliance on 1,000 transactions. SHA-256 anonymization, IQR anomaly detection and 3-page Power BI dashboard.

Python Apache NiFi Power BI

France is Warming Up

Climate dashboard analyzing 8.6M Météo France records across 8 departments from 1950 to 2024 — 74 years of temperature data visualized.

Python PostgreSQL Metabase Docker

Presidential Speeches NLP Analysis

NLP pipeline on 58 US inaugural speeches (1789–2017). Sentiment analysis, topic modeling, NER and TF-IDF to uncover 228 years of rhetorical evolution.

Python NLTK matplotlib scikit-learn

My Skills

Technologies and tools I work with — from data pipelines to full-stack development.

Orchestration

Dagster

Airflow

Apache NiFi

Databases & Processing

PostgreSQL

PySpark

MongoDB

MySQL

Monitoring & BI

Prometheus

Grafana

Metabase

Infrastructure

Docker

Kubernetes

Azure

Git

Linux

Design

Photoshop

Illustrator

Adobe XD

Canva

Languages

Python

JavaScript

Java

C++

Web & Mobile Development

React.js

Next.js

HTML5/CSS3

Angular

Node.js

NestJS

Spring Boot

PHP

React Native

Expo

Experience & Education

Web & AI Development Intern

Navinspire IA February 2025 – June 2025

2025

Developed a SaaS platform for financial and accounting management with Next.js and NestJS. Integrated AI features and document, invoice and stock management tools. Worked in Agile Scrum methodology.

Web Development Intern

InnoVibe June 2024 – July 2024

2024

UML design of an e-commerce platform. Created UI mockups with Adobe XD. Built the full application using React.js, Node.js and MongoDB.

Web Development Intern

Tanit Web January 2024 – February 2024

2024

Built a showcase website with React.js. Designed UML diagrams for a mobile application.

Web Development Intern

Next Consult January 2023 – February 2023

2023

Created a showcase website with WordPress. Designed a logo and built an e-commerce website.

Master of Science (Bac+5) — Data Engineering

SUPINFO Paris

Now

Two-year Master's cycle (Programme Grande École). State-recognized RNCP Level 7 title (Bac+5). Data Engineering specialization: ETL/ELT pipelines, orchestration, NLP, data visualization, cloud architecture and large-scale data processing.

Applied Bachelor's Degree in Information Technology (Bac+3)

ISET Jendouba — Tunisia

2025

Applied degree covering programming, databases, web development, algorithms and software engineering.

Baccalauréat — Computer Science

Lycée Ghardimaou — Tunisia

2022

Scientific baccalauréat with specialization in computer science and mathematics.

Contact Me

rayelen8010@gmail.com

Rayelen Guesmi

GitHub

RayelenGuesmi

Location

Paris, France