01
Data Analysis & BI
- SQL
- Power BI
- Looker Studio
- Tableau
- Excel
- MSBI
- DAX
- KPI
- Data Viz
Data Analyst · Business Intelligence
Eya
Eya
Ben Salem
From raw data to the decision.
I build reliable, automated reportings, dashboards and decision pipelines - from data collection to the business decision.
Available for a permanent role - September 2026
// eya ben salem · data analystFIG. 01
÷2reporting time at Veolia
~6 hper week saved through automation
5business teams equipped with data
15+reportings migrated to Looker Studio
Trusted by
01 - About
From raw data to decisions
Data modelling, data quality, reporting automation and data visualization at the service of business teams.
A computer engineer specialised in Business Intelligence and currently in a Big Data & AI Master's on a work-study contract at Veolia, I will be available for a permanent role from September 2026.
I love turning multi-source data into simple, automated and decision-oriented solutions. My playground: data modelling, data quality, reporting automation and data visualization.
Throughout my work-study and internships, I have designed end-to-end ETL pipelines, interactive dashboards and decision-support architectures, in France and in Tunisia.
- Education
- Master's in Big Data & AI · Engineering degree
- Experience
- ~3 yrs in Data Analytics / BI
- Based in
- Rennes - open to relocation across France
- Languages
- Arabic · French · English
- Certifications
- Google Data Analytics · Google BI · Databricks
- Availability
- Permanent role - September 2026
02 - Skills
My data toolbox
02
Data Engineering & Cloud
- Python
- Talend
- Airflow
- Spark
- Kafka
- Google Cloud
- BigQuery
- Microsoft Fabric
- ETL
03
Databases
- PostgreSQL
- MySQL
- SQL Server
- MongoDB
- SQLite
04
Machine Learning & AI
- NLP
- Supervised models
- LLM
- Pandas
05
Tools & methods
- GitHub
- Docker
- Streamlit
- Apps Script
- Agile
06
Certifications
- Google Data Analytics
- Google BI
- Databricks Lakehouse
03 - Experience
Experience & education
Sept. 2024 - Sept. 2026Work-study
Data Analyst - Veolia
Rennes, FranceDesigned an automated data pipeline on Google Cloud: a CSV export from the ERP dropped into Cloud Storage triggers transformation and loading into BigQuery via Cloud Run, after which the reports refresh automatically on a configured schedule. Multi-source pipelines feeding 5 business teams, migration of around fifteen Excel reportings to Looker Studio (reporting time halved), automation via Apps Script (~6 hrs/week saved) and data quality checks.
- BigQuery
- Cloud Run
- Cloud Storage
- Looker Studio
- Power BI
- SQL
- Python
- Apps Script
Feb. 2024 - Aug. 2024End-of-studies internship
Business Analyst Data / PMO - Alten
Rennes, FranceBusiness requirements gathering, coordination in an Agile environment, reporting & tracking tools (Power BI, Excel) and automation (VBA) to steer ~10 labelling campaigns (manual processing time cut by ~30%).
- Power BI
- Python
- Excel/VBA
- DAX
- Agile
Aug. 2023 - Oct. 2023Internship
Data Engineer - Technozor
RemoteBuilt ETL pipelines (APIs, databases, files) consolidating 5+ sources, Data Warehouse modelling, identification of 3 at-risk customer segments and a monitoring dashboard.
- Python
- Talend
- PostgreSQL
- Power BI
- Flask
June 2023 - July 2023Internship
Machine Learning Engineer - ItServ
Tunis, TunisiaText-analysis models (NLP, regular expressions) to extract information from a corpus of ~5,000 documents, visualisation and reporting to business teams.
- Python
- NLP
- Pandas
- Regex
June 2022 - July 2022Internship
BI Analyst - ETAP
Tunis, TunisiaDefined ~15 HR KPIs, designed an ETL pipeline and OLAP cubes, dashboards and reporting with the Microsoft BI suite.
- SSIS
- SSAS
- SSRS
- OLAP
2024 - 2026Education
Master's in Big Data & AI - Sup de Vinci
Rennes · work-study at Veolia2019 - 2024Education
Computer Science Engineering degree - ESPRIT
Tunis, TunisiaBusiness Intelligence / ERP major - Highest Honours (with the jury's congratulations), top of the class. Exchange semester in Data Intelligence at ESEO (Paris-Vélizy).
04 - Projects
Data projects & architectures
End-to-end pipelines: ingestion, distributed processing, BI and machine learning.
Big Data processing chain for real-time air-traffic analysis. Data from the OpenAIP API is ingested and processed continuously, then surfaced on a map-based dashboard.
OpenAIP→NiFi→Kafka→Spark→PostgreSQL→Power BI
Real-time streaming · distributed ETLView project →
End-to-end data pipeline on a book catalogue: ingestion, cleaning, statistical analysis and a rating-prediction model. Results are exposed through a REST API and an interactive dashboard.
Ingestion→Cleaning→Analysis→FastAPI→Streamlit→ML
FastAPI · Streamlit · MongoDB · MLView project →
Trading decision system on the GBP/USD pair, combining supervised models and reinforcement learning (PPO). The models are served through an API and driven from an interface, the whole stack containerised.
Feature eng.→ML + PPO→FastAPI→Streamlit→Docker
Reinforcement Learning · FastAPI · DockerView project →
Analysis of how weather conditions influence energy consumption in Brittany, from data collected in real time. Trends and correlations explored with MongoDB and ElasticSearch.
Real-time APIs→MongoDB→ElasticSearch→Insights
MongoDB · ElasticSearch · real-timeView project →
National decision-support platform covering consumption, renewable energy, carbon emissions and weather. Data consolidated from RTE, DataGouv and Kaggle, modelled in a star schema and surfaced in Power BI.
RTE · DataGouv · Kaggle→Talend→Star schema→Power BI
Talend · decision modelling · Power BIView project →
Final-year project: analysis and forecasting of DataRaise's LinkedIn performance. Full data architecture (ETL, warehouse, BI) and follower-forecasting models (SARIMAX, regressions; R² = 0.54).
PDF/TXT/JSON→Talend→PostgreSQL→Python ML→Flask→Power BI
Talend · PostgreSQL · Python · Flask · Power BIView project →
05 - What I do
My services
Data Analysis & Visualisation
I turn complex data into clear, interactive dashboards that make performance easier to understand, monitor and act on.
Business Intelligence & Decision Support
I design complete BI solutions: data collection, modelling and analysis using tools such as Power BI, Tableau, Looker Studio and BigQuery.
Automation & Data Pipelines
I build reliable, automated ETL pipelines to centralise data, improve its quality and reduce repetitive manual work.
Data & Advanced Analytics
I use Python and machine learning to run predictive analyses, detect trends and turn data into business value.
06 - Contact
Let's work
Let's work
together.
Hiring a Data Analyst / BI on a permanent contract from September 2026? Let's talk.
Available - Sept. 2026
Rennes · Open to relocation