Σοφοκλής Καλώνης
@0006335
I turn customer, transaction, and product data into actionable insights using Python, SQL, and Power BI.
GreeceWhat I'm looking for
At OPAP–Allwyn Group, I analyze sports-betting and product behavior, monitor player lifecycle trends, and build Power BI dashboards for customer behavior and product performance.
Previously at EY, I built loan-default prediction models and transaction networks using Python, Azure ML, Azure Databricks, and logistic regression.
Experience
Work history, roles, and key accomplishments
Customer Insights & Analytics Specialist
OPAP–Allwyn Group
Sep 2024 - Present (2 years)
Conducted in-depth analysis to extract insights on sports-betting player behavior, implemented IBROAnalysis to monitor player segments, and designed interactive Power BI dashboards to track customer behaviors and product performance.
Created machine learning models to predict default risk of bank loans, constructed networks from transactional data, and performed data quality checks and manipulation using Python and Azure ML.
Education
Degrees, certifications, and relevant coursework
Aristotle University of Thessaloniki
Master, Network Analysis & Complexity
2019 - 2021
Grade: 8.71/10
Master in Network Analysis & Complexity from Aristotle University of Thessaloniki, with a GPA of 8.71/10.
Aristotle University of Thessaloniki
Bachelor, Mathematics
2015 - 2019
Grade: 7.33/10
Bachelor in Mathematics from Aristotle University of Thessaloniki, with a GPA of 7.33/10.
Excelixi
Data Science in Practice, Data Science
Completed the Data Science in Practice certification by Excelixi, part of Project Future by Piraeus Bank, powered by ReGeneration Academy.
Tech stack
Software and tools used professionally
Availability
Location
GreeceAuthorized to work in
Salary expectations
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