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Marwen Ben Aissa

@marwenbenaissa

Data Engineer at RFC who built a Microsoft Fabric Lakehouse decision system and cut compute costs by pausing idle capacity.

Tunisia

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At RFC, I built a commercial decision-support system from scratch on a Microsoft Fabric Lakehouse, replacing a legacy Data Warehouse. I designed incremental PySpark pipelines and used Delta Lake change data feeds to propagate updates through the medallion layers.

I also implemented automatic pause and resume for Fabric capacity, keeping a Power BI report available while reducing idle compute costs. The system included models for opportunity win-probability and customer segmentation, with results displayed in Power BI.

Experience

Work history, roles, and key accomplishments

Data Engineer Intern

RFC

Jan 2026 - Jul 2026 (6 months)

Designed a commercial decision-support system on a Microsoft Fabric Data Lakehouse with medallion architecture, replacing a legacy data warehouse. Implemented incremental ingestion, Delta Lake CDF propagation, FinOps strategies, and machine learning models for win-probability and customer segmentation.

Microsoft Fabric PySpark Delta Lake SQL Power BI Machine Learning Data Modeling FinOps

Web Developer Intern

SUPINFORMATIQUE

Feb 2023 - Jun 2023 (4 months)

Developed a fully functional e-commerce website and integrated a chatbot to streamline customer interaction and reduce manual response times.

Web Development Ecommerce Chatbot

Web Developer Intern

Urban Planning Agency of Grand Tunis

Jan 2022 - Feb 2022 (1 month)

Built an internal website backed by a MySQL database to digitize and organize agency records. Designed core branding materials including a logo, business cards, and advertising posters.

Web Development MySQL Graphic Design

Network Engineer Intern

Ministry of Equipment and Housing of Tunis

Jan 2020 - Feb 2020 (1 month)

Analyzed the Ministry's network infrastructure, assisting with hardware troubleshooting and daily IT operations to maintain high availability for government staff.

Network Infrastructure Troubleshooting IT Operations

Education

Degrees, certifications, and relevant coursework

TEK-UP University

Engineering Degree, Software Engineering

Pursuing an Engineering Degree in Software Engineering with a specialization in Data Science and Artificial Intelligence, expected to complete in September 2026.