Rafał Marks
Warsaw
Summary
Experienced data analyst with a strong background in mathematics and expertise in Excel, SQL, Pyhton and statistical analysis, including risk assessment in gambling environments. Adept at leveraging mathematical and analytical skills to identify and mitigate model risks, with a passion for probabilistic aspects of diverse domains including sports and politics.
Overview
10
10
years of professional experience
Work History
Head of data analysis department
Totalbet
10.2019 - Current
In addition to data analysis:
- Creating and managing our own PostgreSQL database for purposes of data analysis.
- Creating Python scripts for automation of various processes
- Involvement in preparing budget of the firm
- Coordination of data analysis projects including: Income prediction, Customer lifetime value, Risk management.
Data Analyst
Totalbet
07.2018 - 10.2019
- Data analysis related to clients and promotions in bookmaking company
- Financial computations
- Reports in excel, extracting data from PostgreSQL database
Data analyst
ZPR SA
07.2014 - 06.2018
- Reports in Excel for the gambling company
- Mathematical computations concerning profitability and risks in gambling slot machines and table games like poker, blackjack.
Education
Master's degree - Mathematics
Warsaw University
Warsaw07.2015
Bachelor's degree - Mathematics
Warsaw University
07.2013
Skills
- Mathematics
- SQL
- Python
- Excel
- Data Analysis
- Business Intelligence
- Bridge
- Bridge Teaching
- Team Management
Hobbies and Interests
- Bridge - Card game: Champion of Poland in 3 categories in 2019 Member of Polish National Mixed Team for World Championship in 2019, Polish Premier League Winner 2023, Coach of Polish U25 Women Team with silver medal in 2018 World Championship and golden medal in 2019 European Championship and 2023 World Championship
- Probabilistic aspects of sports and politics
- Tennis
- Board games
Timeline
Head of data analysis department
Totalbet
10.2019 - Current
Data Analyst
Totalbet
07.2018 - 10.2019
Data analyst
ZPR SA
07.2014 - 06.2018
Master's degree - Mathematics
Warsaw University
Bachelor's degree - Mathematics
Warsaw University
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