Open to opportunities

Aya Twihri

@ayatwihri

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BI-focused data engineer delivering warehouses, ETL, and Power BI dashboards for data-driven decisions in finance.

Tunisia

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What I'm looking for

I’m looking for a BI/data engineering role where I can drive digital transformation—building data warehouses, ETL pipelines, and Power BI reporting—while collaborating with banking/finance teams to deliver actionable, trusted decision-making insights.

I’m a BI Engineer and Data Analyst specializing in data engineering, business intelligence, and data science. I turn business needs into decision-making solutions through data warehousing, ETL pipelines, and clear Power BI dashboards. I’m especially strong in SQL, Python, Power BI (DAX/Power Query) and dimensional modeling.

In 2026, I supported a remote internal site migration to SharePoint for a major French audiovisual group, preserving about 95% of existing data while customizing the architecture for better access. For my banking project, I built a star-schema Data Warehouse, developed Talend-based ETL to integrate, transform, and validate heterogeneous sources, and delivered Power BI KPI dashboards with automated report distribution. I also developed an NLP sentiment classification model on financial content, achieving approximately 80–85% accuracy and using the results to inform performance and risk perspectives.

Experience

Work history, roles, and key accomplishments

Current

Professional English Trainer

Current

Pyramide Training Center

Jan 2023 - Present (3 years 7 months)

Built a banking decision-making solution for monitoring agency and business center performance, from data integration to managerial reporting. Developed a star-schema data warehouse, ETL pipelines with Talend, and Power BI dashboards (DAX, Power Query, KPI reporting).

Star Schemas Data Warehouse Talend ETL Power BI DAX Power Query Power Automate SQL Data Validation KPI Reporting Reporting Data Analysis

Internal Site Migration

A Major French Audiovisual Group

Jan 2026 - Jun 2026 (5 months)

Migrated and modernized internal SharePoint sites while ensuring service continuity and data integrity. Led migrations and configured SharePoint architecture, working independently in a freelance context.

SharePoint Data Migration SQL Server MySQL Dataverse ETL Python Machine Learning Data Integrity

Final Year Project

Amen Bank

Mar 2025 - Aug 2025 (5 months)

Completed a final year project at Amen Bank.

University Project — Data Scientist

Sesame University

Sep 2024 - Nov 2024 (2 months)

Developed an NLP sentiment classification model on financial content to anticipate market trends. Built and compared classification models and visualized dominant sentiment trends.

NLP Sentiment Analysis Python scikit learn TensorFlow PyTorch Hugging Face BERT Machine Learning Matplotlib SeaBorn data preprocessing Tokenization

Education

Degrees, certifications, and relevant coursework

SESAME University

Engineering Degree in Data Science, Data Science

2020 - 2025

Activities and societies: Banking decision-making solution (data integration to dimensional model + ETL + Power BI). University NLP project on financial sentiment classification using BERT/ML models with ~80–85% accuracy; visualized results with Matplotlib/Seaborn.

Engineering degree in Data Science at SESAME University (09/2020–08/2025). Completed projects including a banking decision-making analytics solution and a financial-content NLP sentiment classification model.