Rafał Chojnowski
Postgraduate Student at Politechnika Warszawska- Claim this Profile
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Experience
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Politechnika Warszawska
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Poland
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Higher Education
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1 - 100 Employee
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Postgraduate Student
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Oct 2022 - Present
Big Data postgraduate studies, (designing, using big data, using Microsoft Visio, SQL) Big Data postgraduate studies, (designing, using big data, using Microsoft Visio, SQL)
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Deloitte
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Business Consulting and Services
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700 & Above Employee
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Data Analyst
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May 2022 - Aug 2022
- transferring datasets between databases processing, - analyzing and verifying data; - preparing Prophet runs; - preparing monthly and quarterly reports using SQL; - preparation of projections based on Prophet and internal data; - usage of SQL (finding data necessary for the specific task), Excel (complex formulas) - transferring datasets between databases processing, - analyzing and verifying data; - preparing Prophet runs; - preparing monthly and quarterly reports using SQL; - preparation of projections based on Prophet and internal data; - usage of SQL (finding data necessary for the specific task), Excel (complex formulas)
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NielsenIQ
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United States
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Information Services
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700 & Above Employee
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Data Research Analyst
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Feb 2021 - Apr 2022
- Market analysis - Volume forecasts preparations - Analyzing trends on the market - Market research - Market analysis - Volume forecasts preparations - Analyzing trends on the market - Market research
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UNIQA Polska
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Poland
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Insurance
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700 & Above Employee
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Actuary
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Jul 2019 - Feb 2020
- collecting, processing, analyzing and verifying data; - model points creation; - preparing monthly and quarterly reports using SQL; - preparation of projections based on Prophet and internal data; - usage of SQL (finding data necessary for the specific task), Prophet, Excel - collecting, processing, analyzing and verifying data; - model points creation; - preparing monthly and quarterly reports using SQL; - preparation of projections based on Prophet and internal data; - usage of SQL (finding data necessary for the specific task), Prophet, Excel
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Aviva
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Insurance
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1 - 100 Employee
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Actuary
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Dec 2018 - Jun 2019
- collecting, processing, analyzing and verifying data; - model points creation; - preparing monthly and quarterly reports using SQL; - preparation of projections based on Prophet and internal data; - usage of SQL (finding data necessary for the specific task), Prophet, Excel - collecting, processing, analyzing and verifying data; - model points creation; - preparing monthly and quarterly reports using SQL; - preparation of projections based on Prophet and internal data; - usage of SQL (finding data necessary for the specific task), Prophet, Excel
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Marsh & McLennan Companies
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Belgium
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Business Consulting and Services
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1 - 100 Employee
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Data Analyst
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May 2018 - Dec 2018
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AIESEC
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Canada
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Non-profit Organizations
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700 & Above Employee
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Volunteer Staff
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Feb 2018 - Sep 2018
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Green Caffè Nero
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Poland
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Retail
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100 - 200 Employee
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Barista
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Feb 2017 - Mar 2018
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Education
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SGH Warsaw School of Economics
Licencjat (Lic.), Quantitive Methods in Economics and Information Systems