Konstantinos Vourvachis

Konstantinos Vourvachis

Data Scientist | Data Engineer | BI & Applied ML

Tilburg, Netherlands
About

I build practical data solutions across analytics, data engineering, business intelligence, and applied machine learning. With an MSc in Data Science and Society and a background in Management Information Systems, I connect technical systems with business needs. My work focuses on data pipelines, warehouses, SQL optimization, recommender systems, personalization, and responsible use of data.

Currently

Data Scientist | Data Engineer | BI & Applied ML

Available for
Selected work

Pathé Thuis data warehouse

I designed a MySQL star-schema data warehouse, built Pentaho ETL pipelines, created a recommendation-ranking SQL view, and produced a seasonal report for personalization and curation insights.

Alexa review analysis

I used GPT-2, structured prompting, and a Jupyter Notebook to analyze the top 50 Amazon Alexa reviews, extracting sentiment, themes, and feature-request insights.

Online chess prediction

My master's thesis project at Tilburg University focused on predicting game variants from gameplay on online chess game platforms.

Work Background

NOVA 1st Level Tech Support Agent at MEDIATEL SA

Athens, Attiki, Greece

Military Service at Hellenic Army

Greece

ELSTAT Enumerator at Hellenic Statistical Authority (ELSTAT)

Khalándrion, Attiki, Greece
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